formerly rooted H811. I unrooted with supersu and attempted to relock the bootloader. But It didn't take. It appears to be in some in between galaxy.
I get into fastboot, but "fastboot devices" comes up empty.
Would like to lock to update to 20X. No PC, only Mac.
LG Bridge sees USB, but not phone.
Help appreciated.
You do realize locking the bootloader will perform factory reset and wipe your data. Are you trying fastboot through MAC, not sure how it is different from PC so if that is causing the issue can't help much.
Is usb debugging enabled, and you have given permission in the pop-up that pops up on phone screen when you connect it to MAC/Computer the very first time? It is possible you missed that permission pop-up the first time and now permission is denied permanently. You may wanna uninstall and reinstall LG driver/device, connect phone again, and look for that permission pop-up on phone screen and allow it. Try connecting usb cable in different usb port too, that might make the pop-up appear again. Also, remember if bootloader is altered or you got custom recovery, phone will possibly soft brick and you will need to use LG Bridge or LG UP with phone in download mode to reflash kdz. Hope this helps.
Edit: For the permission pop-up to show, the phone needs to be turned on, be in mtp mode, and usb debugging to be enabled. Then once you have given permission, you use adb command to reboot into bootloader or i think with phone off, hold the volume down button while you connect to usb cable and not let go of the volume down button till phone is in fastboot menu.
Related
Hi everyone. I need help to solve my brick phone trouble.
This my history:
I tried to flash a Moto X 1058 with a different firmware to be able to introduce a subsidy unlock code. That menu is locked on carrier's original firmware. So, did it with a wrong version and mess the phone, now it restarts automatically with a "boot failure" message and battery is not charging with wall charger.
I got this factory cable mentioned in another post and when is plugged screen says "Battery ok" "Transfer mode: USB Connected" in green text, but Windows won't recognize, says: "Unknown device". Y already tried different ports, different computers, uninstalling and reinstalling drivers but nothing.
I must say that before to use the factory cable, have the "battery low" red text message and once in any of those multiple press-hold keys sequence attempts (CAN'T REMEMBER WICH ONE) I was able to connect to the phone and windows recongnized via "fastboot device", but couldn't do a flash process due to the low battery state.
Any advise? Thanks in advance.
go_nathan said:
Hi everyone. I need help to solve my brick phone trouble.
This my history:
I tried to flash a Moto X 1058 with a different firmware to be able to introduce a subsidy unlock code. That menu is locked on carrier's original firmware. So, did it with a wrong version and mess the phone, now it restarts automatically with a "boot failure" message and battery is not charging with wall charger.
I got this factory cable mentioned in another post and when is plugged screen says "Battery ok" "Transfer mode: USB Connected" in green text, but Windows won't recognize, says: "Unknown device". Y already tried different ports, different computers, uninstalling and reinstalling drivers but nothing.
I must say that before to use the factory cable, have the "battery low" red text message and once in any of those multiple press-hold keys sequence attempts (CAN'T REMEMBER WICH ONE) I was able to connect to the phone and windows recongnized via "fastboot device", but couldn't do a flash process due to the low battery state.
Any advise? Thanks in advance.
Click to expand...
Click to collapse
so fastboot isn't working when you are on the screen that says "battery ok" "transfer mode: usb connected"? Your post is a little confusing. It sounds like you are trying to use rsd or something to flash back to stock FW. You can just do all of this manually through fastboot commands.
all you need to do is download the correct FW for your phone at http://sbf.droid-developers.org/ghost_rcica/list.php
unzip the file
put all the contents (not the folder but the contents in the folder) in the same directory that your fastboot.exe is in
run all of these commands http://forum.xda-developers.com/showthread.php?p=46712761&highlight=flash+stock#post46712761
and your done
jayboyyyy said:
so fastboot isn't working when you are on the screen that says "battery ok" "transfer mode: usb connected"? Your post is a little confusing. It sounds like you are trying to use rsd or something to flash back to stock FW. You can just do all of this manually through fastboot commands.
all you need to do is download the correct FW for your phone at http://sbf.droid-developers.org/ghost_rcica/list.php
unzip the file
put all the contents (not the folder but the contents in the folder) in the same directory that your fastboot.exe is in
run all of these commands http://forum.xda-developers.com/showthread.php?p=46712761&highlight=flash+stock#post46712761
and your done
Click to expand...
Click to collapse
Sorry if I was not clear. What I mean is...
Windows does not recognize the phone with the normal usb cable (the one that cames with the phone), says "uknown device".
Now, I try holding Volume Down + Power buttons, then connect the phone via factory cable and screen says "Battery ok, USB connected", but pc (windows 7) still does not recognize the phone, says "unknown device". I already tried to uninstall and reinstall drivers and different computers, but still the same.
There was only one time when the phone (even with low battery pattern) was recognized by windows with the standard usb cable, but can't remenber wich buttons I pressed.
By the way, I read english better than can write it, hope you can understand but most of all, I beg you can help.
Regards.
go_nathan said:
Sorry if I was not clear. What I mean is...
Windows does not recognize the phone with the normal usb cable (the one that cames with the phone), says "uknown device".
Now, I try holding Volume Down + Power buttons, then connect the phone via factory cable and screen says "Battery ok, USB connected", but pc (windows 7) still does not recognize the phone, says "unknown device". I already tried to uninstall and reinstall drivers and different computers, but still the same.
There was only one time when the phone (even with low battery pattern) was recognized by windows with the standard usb cable, but can't remenber wich buttons I pressed.
By the way, I read english better than can write it, hope you can understand but most of all, I beg you can help.
Regards.
Click to expand...
Click to collapse
windows isn't going to recognize it when it is "fastboot mode" which is the mode where is says "usb connected" or whatever. That is where you run fastboot commands from. If you open a command prompt window (in the directory that your fastboot.exe is in) then you can run "fastboot devices" and it will show that the phone is connected. From there you run the fastboot commands to fix your phone.
mmm no, unknown device it's button sequence matter.
jayboyyyy said:
windows isn't going to recognize it when it is "fastboot mode" which is the mode where is says "usb connected" or whatever. That is where you run fastboot commands from. If you open a command prompt window (in the directory that your fastboot.exe is in) then you can run "fastboot devices" and it will show that the phone is connected. From there you run the fastboot commands to fix your phone.
Click to expand...
Click to collapse
In fact fastboot did not work cause windows don't recognized the devices ("fastboot devices" did not list any device). Drivers were installed in the computer correctly but was a matter on how buttons was pressed.
So if this can help any one with the "UNKNOWN DEVICE" status in windows I did it this way, with the device administrator open (only to monitor the status of your device) in windows pc do this:
1.- Factory cable connected to the phone (so the phone did not restart automatically)
2.- Press POWER button until the phone get off. Before release the power button, disconnect factor cable.
3.- Press POWER + VOLUME DOWN for about 5 seconds, then release POWER BUTTON and keep holding VOLUME DOWN until the screens turns on.
4.- Screen says Connect USB Data Cable. Connect Factory cable. Screen says: "Battery Low" "Transfer mode: usb connected"
5.- Now hold VOLUME DOWN + VOLUMEN UP + POWER BUTTON, the phone turns off.
6.- When screen turns off, release VOLUME UP and POWER button. Screen must says "Battery OK" "Transfer mode: USB Connected"
7.- Windows must recognize the phone and install the drivers.
Try:
fastboot devices
...and your phone must be listed. I recommend to do a
fastboot erase cache
I have a downgrade security warning due to a lock bootloader. Once fastboot could connect to the phone, collect the neccesary data with
fastboot oem get_unlock_data
And follow instructions on https: / / motorola-global-portal.custhelp.com/app/standalone/bootloader/unlock-your-device-b
Sometimes you recieve a "your device does not qualify for bootloader unlocking" message, it's only a Device ID string mistake. Be sure to type or paste it correctly. Try again and don't forget to agree the terms below.
I could unlock the bootloader and my phone startup with a previous flash (the one that bricks my phone due to wrong firmware in a locked bootloader phone).
I hope this can help you too. Best regards
Hi all,
I rooted my phone and unclocked bootloader.
My rom is a stock rom.
I managed to install CWM recovery using lg-optimus-4xhd-recovery-v1.0.apk but something happened.
I rebooted my phone in recovery mode and it is always locked to LG logo.
Pressing Volume up and power I can see normal android system recovery, wiping cache and factory reset don't work.
I haven't usb debugging enable so my computer can't see the phone connected with usb cable, and it's impossible for me flashing the phone with kdz rom methods.
What can I do?
Thx in advance for your answers
No one can help me?
Flashing with kdz results in "phone was not found", is there a way to resolve? I've tried with ubuntu, OS (adb) only see my phone if usb debugging is enabled and it isn't, and with a laptop running win8, installing LG drivers and so on, nothing works.
This is salvagable
If you can get the stock recovery mode, all is not lost, all of the important bits are still functioning.
Power down. Hold VolDn and insert the USB cable. If you get the Software Update screen with a green icon you CAN recover the phone. It may require a battle with Windows to get it to play nice, Windows and USB is always a hit or miss affair; but the phone is ok if that screen appears. Do not use the VolUP + Power LG Recovery mode, there isn't a known tool for that in the wild.
I don't normally run Windows and the couple of times I have booted it to do this it required some hassle and usually skipping the nice way since I had never installed the bundled LG Desktop stuff before things went wrong. So just do what I did, pick the Emergency mode that requires inputting the IMEI instead of letting it detect your phone and then let it fix things for you.
jmorris_42 said:
If you can get the stock recovery mode, all is not lost, all of the important bits are still functioning.
Power down. Hold VolDn and insert the USB cable. If you get the Software Update screen with a green icon you CAN recover the phone. It may require a battle with Windows to get it to play nice, Windows and USB is always a hit or miss affair; but the phone is ok if that screen appears. Do not use the VolUP + Power LG Recovery mode, there isn't a known tool for that in the wild.
I don't normally run Windows and the couple of times I have booted it to do this it required some hassle and usually skipping the nice way since I had never installed the bundled LG Desktop stuff before things went wrong. So just do what I did, pick the Emergency mode that requires inputting the IMEI instead of letting it detect your phone and then let it fix things for you.
Click to expand...
Click to collapse
Many thanks for your answer, I resolved the problem late at night, yes, after a hard battle with windows.
I installed windows 7 32 bit, I tried a lot of Lg drivers, 3.8.1 maybe the best, after inserting the USB cable with SW Update screen some LG peripherals were recognized but the result in KDZ_FW_UPD was always "phone was not found", then I tried connecting USB cable with the Phone in Android recovery mode ( power & Vol up), and OS added a couple more peripherals, and attempting again with SW Upgrade mode worked.
I've done a lot of googling so far, and I haven't seen anyone having this problem yet.
This phone is not yet rooted, and is still running the stock rom and recovery. I haven't been able to get to first base and unlock the bootloader with it because once I boot into Odin/download/fastboot mode, ADB can't see the device anymore.
Although I can turn USB debugging on and verify that ADB can see and list my device, if I reboot, and return to my Developer options menu, it will not still be checked. The problem, I believe, that's creating is that rebooting into Odin mode means that ADB can no longer see my device, because USB debugging has already been turned off. I don't think an app is doing this, because booting into safe mode, turning on USB debugging, and then rebooting into safemode again yields the same result: USB debugging has still been turned off. From the command prompt issuing "adb reboot fastboot" just yields a reboot back to the normal home screen.
EDIT: Upon further inquiry, do I even need USB debugging to get TWRP installed? According to:
http://www.cyanogenmods.org/forums/topic/install-twrp-recovery-samsung-android-using-odin/
they make no mention of USB debugging, only OEM Unlock which does not appear in the Developer Options for my phone...
no matter what I do, my xz1c remains unauthorized whenever I attempt to connect via adb. I've scoured the internet and tried everything. has anyone had this issue with their xz1c and resolved it? I'd like to debloat my phone, but cannot because I cannot fully use adb. any ideas?
bleggy said:
no matter what I do, my xz1c remains unauthorized whenever I attempt to connect via adb. I've scoured the internet and tried everything. has anyone had this issue with their xz1c and resolved it? I'd like to debloat my phone, but cannot because I cannot fully use adb. any ideas?
Click to expand...
Click to collapse
enable developer options - enable usb debug
1. Turn off usb debugging and developer options
2. Restart your phone
3. Turn on developer options and usb debugging
4. Plug in usb cable
5. Watch your phone screen carefully for an authorization dialog - and accept this. If you skip it, or cancel it by accident then you need repeat above steps.
6. ADB is now authorized.
I tried exactly this. Still "unauthorized".
Maybe current update of Android 9 blocks it.
Dean F said:
1. Turn off usb debugging and developer options
2. Restart your phone
3. Turn on developer options and usb debugging
4. Plug in usb cable
5. Watch your phone screen carefully for an authorization dialog - and accept this. If you skip it, or cancel it by accident then you need repeat above steps.
6. ADB is now authorized.
Click to expand...
Click to collapse
I got an Xperia 10 to flash /e/ OS on. I've got the bootloader unlocked. I had dev options turned on and accepted the RSA key, and tried to flash a recovery. It didn't seem to go through so I rebooted the phone. Now it won't prompt to authorize USB debugging, I deleted the RSA key on computer thinking maybe it was that. I've booted up usb with mAid and tried to get it to prompt for an RSA key on the computer with no luck. I've even tried going to a different computer altogether. I've also done some of the basic commands, kill-server, start-server, reconnect. I've reset the phone twice. One thing I've noticed is that usb debugging stays on even after a factory reset. Do I try locking and unlocking the bootloader again ? I'm not sure what else to do, has anyone else encountered this and overcame it?