Database Develop

ADB Device Not Found

ADB was working perfectly fine until this morning. Now it says Device Not Found. Any suggestions on how I can get it working again? Thanks in advance.

Bump. Anyone know?

Does fastboot work then?
Are you on windows? window 7?
Try every USB port on your computer, my win7 machine will only recognise my device through one usb port.

liam.lah said:
Does fastboot work then?
Are you on windows? window 7?
Try every USB port on your computer, my win7 machine will only recognise my device through one usb port.
Click to expand...
Click to collapse
Windows 7. Fastboot works just fine. Never had this problem before. My Nexus shows up as connected and working in Windows Device Manager. WTF is going on? Frustrating.
Tried all USB ports. All of them recognize the device, but "adb remount" returns: "error: device not found."

Part Four said:
Windows 7. Fastboot works just fine. Never had this problem before. My Nexus shows up as connected and working in Windows Device Manager. WTF is going on? Frustrating.
Tried all USB ports. All of them recognize the device, but "adb remount" returns: "error: device not found."
Click to expand...
Click to collapse
Do you have the Allow USB Debugging option checked? Maybe it got unchecked on accident.

Diceman4 said:
Do you have the Allow USB Debugging option checked? Maybe it got unchecked on accident.
Click to expand...
Click to collapse
Yeah, thanks. I've had it checked. I've tried to adb remount on all 4 of my computers tonight and none of them are finding my device anymore. Might be time for a wipe and reflash. Anyone else have a suggestion before I commit to a wipe?

I guess I'm going to wipe and reflash.

1)make sure usb tethering is off.
2)maybe reinstall the latest driver from http://developer.android.com/sdk/win-usb.html ?

I just wiped and reflashed and still no dice. Might as well just go back to my nandroid backup and keep searching for answers.

I know this might be a little late, but I would like to post how I solved my problem. I too was experiencing this problem, no matter what USB Port I plugged my phone into, it just would not work. It kept saying "error: device not found." After searching on Google for a quite a while, I decided to again play around in device manager. I remember a long time ago, a client of mine had a problem with certain USB Devices not working, the solution was to go into Device Manager expand "Universal Serial Bus controllers" and right click each "USB Root Hub" and click "Uninstall."
This did the trick for me. After I hit the right USB Root Hub, my computer detected three new Android controllers that needed drivers: CDC, CDC Abstract, and Android Composite. I installed the downloaded Android drivers for the Android Composite and guess what, IT WORKS!
Hope this helps someone.
Mike Lierman
Founder and Owner of
Invise Solutions
invisesolutions.com

0vermind said:
I know this might be a little late, but I would like to post how I solved my problem. I too was experiencing this problem, no matter what USB Port I plugged my phone into, it just would not work. It kept saying "error: device not found." After searching on Google for a quite a while, I decided to again play around in device manager. I remember a long time ago, a client of mine had a problem with certain USB Devices not working, the solution was to go into Device Manager expand "Universal Serial Bus controllers" and right click each "USB Root Hub" and click "Uninstall."
This did the trick for me. After I hit the right USB Root Hub, my computer detected three new Android controllers that needed drivers: CDC, CDC Abstract, and Android Composite. I installed the downloaded Android drivers for the Android Composite and guess what, IT WORKS!
Hope this helps someone.
Mike Lierman
Founder and Owner of
Invise Solutions
invisesolutions.com
Click to expand...
Click to collapse
Unfortunately this didn't work for me. I tried uninstalling every single USB device/port/hub on two of my systems, then rebooting and letting it do its thing, then plugging in my Nexus and installing the ADB drivers. Still can't connect via ADB. This is a complete mess. No clue how/why this happened or what I can do to get it back.

0vermind said:
I know this might be a little late, but I would like to post how I solved my problem. I too was experiencing this problem, no matter what USB Port I plugged my phone into, it just would not work. It kept saying "error: device not found." After searching on Google for a quite a while, I decided to again play around in device manager. I remember a long time ago, a client of mine had a problem with certain USB Devices not working, the solution was to go into Device Manager expand "Universal Serial Bus controllers" and right click each "USB Root Hub" and click "Uninstall."
This did the trick for me. After I hit the right USB Root Hub, my computer detected three new Android controllers that needed drivers: CDC, CDC Abstract, and Android Composite. I installed the downloaded Android drivers for the Android Composite and guess what, IT WORKS!
Hope this helps someone.
Mike Lierman
Founder and Owner of
Invise Solutions
invisesolutions.com
Click to expand...
Click to collapse
Thanks it helped me

try going into the device manager and removing the driver. Remove your phone from your computer then reconnect it. Upon the request to allow drivers to install, tell it you want to install from a specific location and point the driver installer to a known good copy of the ADB driver.
-------------------------------------
Sent via the XDA Tapatalk App from my Nexus One

[TOOL] Ouya SuperScript - One click CWM, Root, Xposed & Play Store for Windows

Ouya SuperScript
By TehCrucible
v0.1​
INTRODUCTION
So I originally wrote this batch script to simplify and combine some of the most frequently used tweaks on the forums for my own sake, to speed up my tinkering with the Ouya but I've decided to clean it up and upload it in case anyone else wants to use it.
This script is designed as a "one-click" modification tool for a stock Ouya on the latest firmware. Please read this guide carefully.
I ACCEPT NO RESPONSIBILITY FOR ANY DAMAGE OR DATA LOSS. This script is built on the work of many others much smarter than myself and be sure to check the credits.
SO WHAT DOES IT DO?
In a nutshell:
- Install Clockworkmod Recovery
- Root Ouya
- Install Xposed Framework
- Install Google Play Store
WHAT DO I NEED?
- A Windows PC. I have included drivers for both x86 and x64.
- A Micro USB cable.
INSTALLATION OVERVIEW
1. Update your Ouya to latest stock firmware
2. Install ADB drivers
3. Run the script
4. Play some games!
There's a more detailed step-by-step in the included README.txt file.
KNOWN ISSUES
- None
CREDITS & THANKS
WonderEkin
mybook4
elmerohueso
fatesausage
DOWNLOAD
Here

Thanks a lot for this. A lo of people have been asking about an automated method to get the play store running on the OUYA...

Great works. I just think of root my ouya....

A quick update:
It's working. I'm on the latest firmaware which is JZO54L-OUYA, kernel version 3.1.10-g780994a. Completely stock, but I had already rooted my OUYA.
Anyway, I enabled the Wireless ADB which will instantly show you the ip and port, installed the drivers for 64bit. Then open CMD and type: adb connect "iport"
Then I ran the superscript and everything went fine.
Hope this helps. I didn't even have to connect with a wire.
But I guess if you wanna install the CWM recovery you should be connected with a wire...

Hello guys!
I can see the Ouya in Device list in Control panel but I can't connect it in SuperScript. Any ideas?
THX

zmelkoow said:
Hello guys!
I can see the Ouya in Device list in Control panel but I can't connect it in SuperScript. Any ideas?
THX
Click to expand...
Click to collapse
Did you install the drivers right? If yes, then you should open the folder where you extracted your files and right click while holding shift then choose open CMD here. Then write: adb devices
If your device is there, it will give you an output of the IMEI and name of device
From there, you can then tell us what the error is and hopefully we can resolve it...

zmelkoow said:
Hello guys!
I can see the Ouya in Device list in Control panel but I can't connect it in SuperScript. Any ideas?
THX
Click to expand...
Click to collapse
that happened to me yesterday, but I overcame it by have my computer plugged into the Ouya then reboot the ouya and as soon as the computer recognized it started the script and it worked.

but I have an issue too
So I can run the script everything works except getting the recovery installed. the command prompt acts like it successfully installed the recovery then the Ouya proceeds to reboot into recovery mode. When that happens I get this menu? Nothing happens when I push any buttons on my keyboard. This doesn't look like a custom recovery.

I have tried this many times, did a factory reset and started fresh however even after updating the device driver it doesnt recognize the ouya....

unkoil said:
So I can run the script everything works except getting the recovery installed. the command prompt acts like it successfully installed the recovery then the Ouya proceeds to reboot into recovery mode. When that happens I get this menu? Nothing happens when I push any buttons on my keyboard. This doesn't look like a custom recovery.
Click to expand...
Click to collapse
No it doesn't :angel:.
I think I had the recovery installed when I first got the device a long time ago and I used the manual method in this thread, but I'm not sure that it works any more. Also do you have a wired or wireless keyboard? By the way only the Bluetooth keyboard doesn't work. May be if you can install the recovery from that thread, then you can proceed to the next step. One last thing, I don't think you will need the recovery except if you want to install CM or something. Other than that, I never used it before.
TRMB said:
I have tried this many times, did a factory reset and started fresh however even after updating the device driver it doesn't recognize the ouya....
Click to expand...
Click to collapse
Which version of windows are you on? Is it Windows 8 or 8.1? Do you know how to disable driver signature verification?
Also, what does it say when you connect? Just nothing, or not recognized or what? You can try the adb wireless, go into settings/development on the ouya and activate it. Then open CMD from the extracted folder and type adb connect "ip : port" then check by typing "adb devices". Let us know what happens after that.

Which version of windows are you on? Is it Windows 8 or 8.1? Do you know how to disable driver signature verification?
Also, what does it say when you connect? Just nothing, or not recognized or what? You can try the adb wireless, go into settings/development on the ouya and activate it. Then open CMD from the extracted folder and type adb connect "ip : port" then check by typing "adb devices". Let us know what happens after that.[/QUOTE]
I have tried both from my windows 7 computer and 8.1 laptop. It showed up just as you said "missing driver", sent it to the drivers part of SS to get the driver, it said it installed but when i run the SS and hit option "1" it comes up blank...

ahmadshawki said:
No it doesn't :angel:.
I think I had the recovery installed when I first got the device a long time ago and I used the manual method in this thread, but I'm not sure that it works any more. Also do you have a wired or wireless keyboard? By the way only the Bluetooth keyboard doesn't work. May be if you can install the recovery from that thread, then you can proceed to the next step. One last thing, I don't think you will need the recovery except if you want to install CM or something. Other than that, I never used it before.
I am having the same issue but not only with this method, I have also tried to install CWM with oneclicks auto and manual method to no avail.....
any suggestions?
Click to expand...
Click to collapse

always says it installed but will only boot into stock recovery

TRMB said:
always says it installed but will only boot into stock recovery
Click to expand...
Click to collapse
I can see from your posts that you tried everything and I'm so sorry that I'm just a user and not a developer or something. May be you can try sideloading terminal and try CWM manually (if you haven't already) or sideload ROM Toolbox and try the flash recovery option.
That's all I got. But if I were you, I won't bother about the CWM at all. It's useless.
As for the Play store, try the mod that I attached in my reply and let me know if this one works for you...

Unfortunately the link is not working. Is it possible to update it, please?

What I do if my micro usb is broken :/. I only have wireless adb

.. nice .. now my ouya will run again .. thanks

I already tried everything but I can't make this work... I installed every single drive in every single way.
The best screenshot of the whole situation is on attachment. SuperScript simply doesn't recognize OUYA with default drivers, neither provided drivers (or any of its variation like "composite adb" or something like that. The "List of devices attached" always return empty, even when provided drivers installed (signature deactivated and everything else). As readme says, when SuperScript doesn't recognize, it returns "error: device not found" every time that I try something...
This SuperScript seems great to start things on my my untouched and default OUYA... but I'm honestly out of options.

vinirockman said:
I already tried everything but I can't make this work... I installed every single drive in every single way.
The best screenshot of the whole situation is on attachment. SuperScript simply doesn't recognize OUYA with default drivers, neither provided drivers (or any of its variation like "composite adb" or something like that. The "List of devices attached" always return empty, even when provided drivers installed (signature deactivated and everything else). As readme says, when SuperScript doesn't recognize, it returns "error: device not found" every time that I try something...
This SuperScript seems great to start things on my my untouched and default OUYA... but I'm honestly out of options.
Click to expand...
Click to collapse
Problem solved. It is Windows Drivers issue. S-Config did a great job explaining how you should do this HERE. I hope it helps people who got stuck. SuperScript did work, I did installed CWM but I was not able to navigate (neither thru bluetooth usb full keyboard). I'm going to try to figure out what I'm missing later. As I can see, S-Config's website is fully updated... I do highly recommend read there who is going to do anything with ouya.

vinirockman said:
Problem solved. It is Windows Drivers issue. S-Config did a great job explaining how you should do this HERE. I hope it helps people who got stuck. SuperScript did work, I did installed CWM but I was not able to navigate (neither thru bluetooth usb full keyboard). I'm going to try to figure out what I'm missing later. As I can see, S-Config's website is fully updated... I do highly recommend read there who is going to do anything with ouya.
Click to expand...
Click to collapse
.. CWM need wired usb keyboard no navigate .. i don't remember if it can do it via bluetooth

ADB

hi
im trying to use ADB to delete some bloatware off of my phone, but im having troubles doing so because it cannot find my device. ive tried updating the drivers for it through Device Manager but the phone is not listed there. however, it shows up in My Computer and i am able to transfer files onto it.
are there any other solutions or possible fix for this?
thanks.

I'm new here so I can't post links. I was having the same problem with the Adb version I was using with my old phone (mostly getting "device offline" errors).
Google "15 seconds Adb". Its an up-to-date installer that weights almost nothing and includes all the necesary drivers.
Deleted Whats New with no problem.

julianf92 said:
I'm new here so I can't post links. I was having the same problem with the Adb version I was using with my old phone (mostly getting "device offline" errors).
Google "15 seconds Adb". Its an up-to-date installer that weights almost nothing and includes all the necesary drivers.
Deleted Whats New with no problem.
Click to expand...
Click to collapse
ive tried it but it gave me an error message saying "ERROR: Invalid command line parameter '****\Desktop\adb-installer.log'."
edit: it said it installed all the drivers but my device is still not showing up

aznpiggy said:
ive tried it but it gave me an error message saying "ERROR: Invalid command line parameter '****\Desktop\adb-installer.log'."
edit: it said it installed all the drivers but my device is still not showing up
Click to expand...
Click to collapse
Do you have USB debugging enabled?

Michealtbh said:
Do you have USB debugging enabled?
Click to expand...
Click to collapse
yes i do
my computer is able to recognize my nexus 5 so idk whats going on

Have you installed the three things that come with the installer? (Adb+fastboot+drivers)?
Also: have you installed the propietary Sony software for Xperia interaction (can't remember the name, probably Xperia Connect or something like that) ? Maybe that has some drivers that you need.
I asume you also have installed the Google USB drivers installed (use 32 bit version, NOT 64).
I'm just naming all these because I had all of them already installed before I downloaded 15 seconds adb, so maybe they interact somehow and that's why it works for me.
Also make sure you are using latest version of everything.
Edit: did you get on your phone the debugging alert when you connected it?
Edit 2: please post what commands you enter into the cmd.

julianf92 said:
Have you installed the three things that come with the installer? (Adb+fastboot+drivers)?
Also: have you installed the propietary Sony software for Xperia interaction (can't remember the name, probably Xperia Connect or something like that) ? Maybe that has some drivers that you need.
I asume you also have installed the Google USB drivers installed (use 32 bit version, NOT 64).
I'm just naming all these because I had all of them already installed before I downloaded 15 seconds adb, so maybe they interact somehow and that's why it works for me.
Also make sure you are using latest version of everything.
Edit: did you get on your phone the debugging alert when you connected it?
Edit 2: please post what commands you enter into the cmd.
Click to expand...
Click to collapse
i turned on a setting on the phone where it installs a software that organizes all the media files for your phone
right before i was about to install the software, i noticed that my computer started recognizing my device
everything started working like it should since
thanks for your help
edit: i didnt and still havent installed the file managing software lol idk why it started to work

Looking to go AOSP from Stock KK [4.4.4]

Sooooooooooo,
I have a Z1 [C6903] that I picked up yesterday. It came with 14.2.A.1.136 Jellybean 4.3.
I wanted to
Unlock bootloader
Install custom recovery
Root
Install any nice AOSP ROM [preferably LP-based]
I installed the Minimal ADB-Fastboot 1.4.
I also installed the Flashtool 0.9.18.2.
I also installed the Z1 device, Fastboot, and Flashmode drivers [version 1.6.2] from the driver folder. It first failed, and then I disabled driver verification then everything went smooth!
Device manager recognized the phone in MTP and Fastboot, and Flashmode modes. Drivers installed correctly I presume.
Then the challenges arrive:
adb devices returned it as "offline"
Android studio couldn't push a project to it because it was offline
fastboot devices identified it, but fastboot -i 0x0fce getvar version returned an error [getvar:version FAILED (command write failed (Unknown error))]
Things I've tried to do to rectify the connectivity issue:
I'm using a SurfacePro 4 so I can't switch USB ports [only have one].
I've tried different cables - they yield the same result.
I've enabled and disabled USB debugging, revoked access, unplugged and replugged, rebooted, etc. Still no change in result.
Since the device had some OTA updates pending, I ran those and now i'm on 4.4.4 with 14.4.A.0.157, with some other updates currently waiting for me to accept so they can download. I've decided to post here for help and won't run those updates unless it increases my profit
PS: Even after the updates, adb and fastboot still are unchanged in their results.
Help please
Update:
It was a freaking USB cable. I had tried two of them. None had worked.
I finally unleashed my Anker USB cable and Boom! We good to go!!!
Thanks all!:highfive::highfive::highfive::highfive:

Make sure to enable USB debugging in Developer Options at the bottom of the Settings app

tomascus said:
Make sure to enable USB debugging in Developer Options at the bottom of the Settings app
Click to expand...
Click to collapse
Did this and more. Still to no avail.
The phone shows up in the computer, it just doesn't show as online when I run the adb devices command.
That's what I need help with.
Thanks

ahh have you tried using
Code:
adb kill-server
adb start-server
and trying again?
What should happen is the authorisation window pops up on your phone

tomascus said:
ahh have you tried using
Code:
adb kill-server
adb start-server
and trying again?
What should happen is the authorisation window pops up on your phone
Click to expand...
Click to collapse
Excellent! I did that, too. even manually closed and restarted adb.exe to no avail.
The thing is, my Z1 DOES NOT show me the authorization pop-up! Ever!
I've done this a million times on other phones, and I know the procedure. It's just that this Z1 is not showing the authorization popup
Thoughts?

boydee said:
Excellent! I did that, too. even manually closed and restarted adb.exe to no avail.
The thing is, my Z1 DOES NOT show me the authorization pop-up! Ever!
I've done this a million times on other phones, and I know the procedure. It's just that this Z1 is not showing the authorization popup
Thoughts?
Click to expand...
Click to collapse
Find a quiet corner and cry
Tried running adb as admin?

tomascus said:
Find a quiet corner and cry
Tried running adb as admin?
Click to expand...
Click to collapse
Tried this, too!
No change, anywhere.
I actually went ahead and tried adb on another PC with minimal adb-fastboot and adb drivers installed, and it returned the same "offline" response
Whoa!:angel:

@boydee
this could work with you
i assume that you rooted your phone you will do that:
1. open your favorite file explorer(suggest: ES File Manger)
2.go to /data/misc/adb/
3.delete "adb_keys" file
4.enable usb debugging
5.reinstall your drivers
6.open command and kill adb server(adb kill-server)
7.connect your device and run command (adb devices)
8.look at your device you will find text box telling you a new pc check always trust bla bla and click trust or something like that
9.you will see something like that
http://imgur.com/ReQtofb

How to upgrade to kitkat 4.4.4 India version of c6903 Sony Xperia Z1 pls help

DectonX said:
@boydee
this could work with you
i assume that you rooted your phone you will do that:
1. open your favorite file explorer(suggest: ES File Manger)
2.go to /data/misc/adb/
3.delete "adb_keys" file
4.enable usb debugging
5.reinstall your drivers
6.open command and kill adb server(adb kill-server)
7.connect your device and run command (adb devices)
8.look at your device you will find text box telling you a new pc check always trust bla bla and click trust or something like that
9.you will see something like that
http://imgur.com/ReQtofb
Click to expand...
Click to collapse
Hey, thanks for the advice!!
Finally got root [without use of PC] and when I open the /data/misc/adb/, the folder is EMPTY
A little confused there.
I did the same procedure for the PC [deleting from C:/Users/boydee/.android/] but it also was to no avail.

k9rockstar said:
How to upgrade to kitkat 4.4.4 India version of c6903 Sony Xperia Z1 pls help
Click to expand...
Click to collapse
Hey there! Please check here for a firmware file that works for you.
When you've downloaded, use the Flashtool to flash it to your phone.
If you want help flashing it to your phone, check this thread out.
Hope that helps

boydee said:
Hey, thanks for the advice!!
Finally got root [without use of PC] and when I open the /data/misc/adb/, the folder is EMPTY
A little confused there.
I did the same procedure for the PC [deleting from C:/Users/boydee/.android/] but it also was to no avail.
Click to expand...
Click to collapse
This could problem with installing drivers as PC don't detect adb in debugging mode
So disable driver verification again and install drivers from flashtool remember to check
1. Fastboot drivers
2. Flashmode drivers
3. Xperia Z1 drivers
And restart
If the problem not fixed try adb universal drivers just Google it
I was have same problem with win 8.1 but I didn't all that I just installed win 7 and do it
Remember to backup ta before unlock to backup your DRM keys

Can't connect in fastboot, driver issue?

After doing lots of reading and trying many things I cannot connect in fastboot mode. I tried on two computers, holding volume down and plugging in usb cable. In CMD I run fastboot status and it just stays on <waiting for device>. I have connected other Android phones so maybe that is somehow messing up the device drivers, but I reinstalled them. Also when I run adb reboot fastboot from CMD, the phone restarts normally and not to fastboot but the volume down at least shows blank screen.
My goal is to get root, so whatever is easiest.

LuminousOne said:
After doing lots of reading and trying many things I cannot connect in fastboot mode. I tried on two computers, holding volume down and plugging in usb cable. In CMD I run fastboot status and it just stays on <waiting for device>. I have connected other Android phones so maybe that is somehow messing up the device drivers, but I reinstalled them. Also when I run adb reboot fastboot from CMD, the phone restarts normally and not to fastboot but the volume down at least shows blank screen.
My goal is to get root, so whatever is easiest.
Click to expand...
Click to collapse
If you have used that computer for other phones previously, that might be the problem, Winodws is asigning the wrong driver. In your picture you have devices with warning triangles (no drivers). Try manually assigning the Sony driver. Depends on what you're doing, but you need a different driver for when you want to use ADB, so start the phone into recovery, connect it to your PC and look again in the device manager and manually add the Google USB driver.
If you are using windows10 and trying to install drivers, it doesn't tell you that the install failed. Restart the machine in safemode and look for 'driver signing disabled'

Didgesteve said:
If you have used that computer for other phones previously, that might be the problem, Winodws is asigning the wrong driver. In your picture you have devices with warning triangles (no drivers). Try manually assigning the Sony driver. Depends on what you're doing, but you need a different driver for when you want to use ADB, so start the phone into recovery, connect it to your PC and look again in the device manager and manually add the Google USB driver.
If you are using windows10 and trying to install drivers, it doesn't tell you that the install failed. Restart the machine in safemode and look for 'driver signing disabled'
Click to expand...
Click to collapse
It's unclear to me which driver should be added to which device. For example should the Sony or Google driver be added to the section Android Devices, Portable Devices, or Sony?

LuminousOne said:
It's unclear to me which driver should be added to which device. For example should the Sony or Google driver be added to the section Android Devices, Portable Devices, or Sony?
Click to expand...
Click to collapse
I'm not sure what you're trying to do. If you want to flash a rom, you want flashmode, volume down (-) then plug in the USB. If you want fastboot it's volume up (+) then plug in the USB..
MTP driver is wrong, you need to uninstall it and re-install the sony driver. Windows chooses the wrong driver by default and you have to manually add it yourself to make it work.
Having said that you mentioned that you are getting ADB commands to work, so I'm confused, perhaps the google driver is in place, but the Sony one is not.
You need both, when the phone is in fastboot it's presented as a different device than when connected via ADB.
Hope that helps explain a bit.
But if you're having issues with the drivers, should you really be going down the unlocking road? It doesn't get you many advantages and breaks a whole heap of sh*t.

LuminousOne said:
It's unclear to me which driver should be added to which device. For example should the Sony or Google driver be added to the section Android Devices, Portable Devices, or Sony?
Click to expand...
Click to collapse
I had this problem before. My fault before was install drivers in usb-debugging mode, then a change to fastbook/flash, and then the phone is not recognized or connection properly - despite me thinking I had correctly installed the drivers.
Took me months to figure it out. Boot into windows, then connect your phone in all modes, flash mode, fastbook mode, standard, and usb debugging - and for each mode - install the Sony driver again.
The result will be, that for every mode - when you go to device manager - you won't see an exclamation mark. If you ever see an exclamation mark again - install the driver. You get the idea.
Regards,

I finally found the f**kin problem the invalid driver was hiding under "other devices" only when the phone was in fastboot mode. Basically I followed the instructions of user2021355 from here.
Start Windows in test mode (instructions)
download driver from https://developer.sony.com/develop/drivers/
in admin command prompt run adb reboot bootloader
if the above step failed, you have a problem with adb and the solution is something different
open device manager and carefully search for any errors. I found mine hidden under "other devices"
right click on the errored driver and choose update
choose browse my computer
select the driver you downloaded from step 2
verify if working by running fastboot devices and you should get a serial number

Didgesteve said:
should you really be going down the unlocking road? It doesn't get you many advantages and breaks a whole heap of sh*t.
Click to expand...
Click to collapse
I thought the only thing it broke was the camera and there's a DMR fix for that. Does it mess up something else?

LuminousOne said:
I thought the only thing it broke was the camera and there's a DMR fix for that. Does it mess up something else?
Click to expand...
Click to collapse
Some banking and games apps don't like rooted phones.
Not sure about android pay.

Hi
I ve the yellow exclamation mark in device manager -> other devices -> "Android"
When I point to the Xperia_XZ1_Compact_driver/ folder (from https://developer.sony.com/file/download/xperia-xz1-compact-driver// ), windows cant find a driver.
same is when pointing to the drivers from here: https://developer.android.com/studio/run/win-usb
I ve the G8441

sheedy1900 said:
Hi
I ve the yellow exclamation mark in device manager -> other devices -> "Android"
When I point to the Xperia_XZ1_Compact_driver/ folder (from https://developer.sony.com/file/download/xperia-xz1-compact-driver// ), windows cant find a driver.
I ve the G8441
Click to expand...
Click to collapse
Add the driver manually.

Didgesteve said:
Add the driver manually.
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Click to collapse
At least for me it wasn't enough to add the driver manually (I think because the invalid driver would still be there). So you need to right click on it, update, then browse to the downloaded driver.

OK I got it working with installing the driver, win10 bootet with disabled Driver Signature enforcement

LuminousOne said:
At least for me it wasn't enough to add the driver manually (I think because the invalid driver would still be there). So you need to right click on it, update, then browse to the downloaded driver.
Click to expand...
Click to collapse
I think we have different ideas of what adding the driver manually is

sheedy1900 said:
OK I got it working with installing the driver, win10 bootet with disabled Driver Signature enforcement
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Click to collapse
i have the problem as you and I'm also on win10. can you share how you installed the fastboot driver?
the adb and mtp drivers work fine for me, just fastboot is not working

unsigned driver under W10
try this one
https://www.maketecheasier.com/install-unsigned-drivers-windows10/
Gesendet von meinem viennalte mit Tapatalk

I have the same problem with my Sony XZ1 Compact G8441.
'adb devices' shows my phone, after 'adb reboot bootloader' phone goes into fastboot mode (I think), the one with blue LED, but 'fastboot devices' does not show any connected devices. Same when pressing Volume Up or Volume Down while plugging the phone in.
After some reading I figured it was a driver issue, so I tried installing drivers from Sony XZ1 Compact driver and Sony Fastboot Driver.
Tried installing through device manager, right-click on faulty 'Android' under 'Other Devices', update driver, browse to download location.
With 'Sony XZ1 Compact driver' it found no installable drivers.
With 'Sony Fastboot Driver' it found an installable driver but had an error. Error said something like 'Did not find "Android ADB Interface", installation failed'.
I tried figuring out what you guys meant by 'installing driver manually' but I don't understand. Is it what I tried above, or something else?
My goal is to be able to install TWRP, which needs an unlocked Bootloader first. I followed the instructions on the official Sony Website for that.

Sorry. Delete this.

Gnorv said:
After some reading I figured it was a driver issue, so I tried installing drivers from Sony XZ1 Compact driver and Sony Fastboot Driver.
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Click to collapse
If you're using Windows 10 you'll have thought that you'd have installed the drivers, but W10 fails on driver install and doesn't tell you.
Start the pc in 'safe mode' (hold shift while restarting), then choose 'driver signing disabled', install the drivers agiain. This time it should work.

Didgesteve said:
If you're using Windows 10 you'll have thought that you'd have installed the drivers, but W10 fails on driver install and doesn't tell you.
Start the pc in 'safe mode' (hold shift while restarting), then choose 'driver signing disabled', install the drivers agiain. This time it should work.
Click to expand...
Click to collapse
No, that did not help. The same problem remains. Phone is recognized when powered on by 'adb devices' but not recognized after typing 'adb reboot bootloader' and 'fastboot devices'.
Thanks for your suggestion though.

I got the problem that no matter what i do i can't install the driver.
Booting windows 10 with driver check disabled does not solve my problem.
Once i selected the driver to install i end up with a questionmark in the device manager above the android device. Taking a closer look reveals that there seems to be no driver installed.....
Any advice?
I tried:
1. Booting with driver signature check disabled
2. Switching windows 10 into test Mode
I booted ubuntu from a live usb stick and went from there. That works like a charm without the need of installing any drivers
Both solutions do not work....