[Q] How to Get Into Fastboot? - LG Optimus L90

Hello,
I'm trying to get back into fastboot mode...my device is a d415, and I have already successfully installed a custom recovery and a custom ROM. However, I want to get back into fastboot mode and I can't figure out how. I zeroed out my laf partition again thinking that would do the trick - but anything I try either boots me into recovery mode or just turns the phone on like normal. Any suggestions for how to get into fastboot? Preferably a way where I can still get into Download mode/recovery mode?

BellaMay95 said:
Hello,
I'm trying to get back into fastboot mode...my device is a d415, and I have already successfully installed a custom recovery and a custom ROM. However, I want to get back into fastboot mode and I can't figure out how. I zeroed out my laf partition again thinking that would do the trick - but anything I try either boots me into recovery mode or just turns the phone on like normal. Any suggestions for how to get into fastboot? Preferably a way where I can still get into Download mode/recovery mode?
Click to expand...
Click to collapse
This requires a PC and USB cable. Power off the device. Attach USB to PC. While holding Volume Up attach USB cable to your device and continue to hold Volume Up button until you see "DOWNLOAD MODE" on the second line of the display.

Related

Bricked HTC One(writed recovery to boot partition)

Hello dear guru's =)
I have an HTC One international. Today i try to get root access and install custom recovery, whent i flash recovery i missed that chose a boot partition to install it. Now phone boots only into recovery, and from my PC, adb or fastboot don see it, but in usb devices its present.
Im on linux Ubuntu 13.04.
In phone dont have any backup.
The phone can't boot in bootloader?
Guich said:
The phone can't boot in bootloader?
Click to expand...
Click to collapse
When i chose from CWM recovery menu "Reboot recovery", phone boot into download mode, and thats all. Fastboot or adb dont see it.
But. In usb device list:
In download mode:
Bus 002 Device 061: ID 0bb4:0ff9 HTC (High Tech Computer Corp.) Desire / Desire HD / Hero / Thunderbolt (Charge Mode)
In recovery mode:
Bus 002 Device 063: ID 0bb4:0f91 HTC (High Tech Computer Corp.)
Assuming you didn't corrupt your boot loader you should be able to get at the boot loader and use fastboot to flash a new recovery.
Power the device off
Hold power and volume down, the phone should turn on and load into the boot loader.
From there you can select fastboot (navigate menu with volumn buttons, power button to select fastboot).
You can use this command to flash a recovery:
Code:
fastboot flash recovery recovery.img
If you can enter bootloader,you may try formatting partitions from fastboot,and flashing them afterwards,that is if bootloader is unlocked.
You can also lock your bootloader and try installing RUU,it will put your phone back to stock,
P.S. - I'm new to this,so please consult with more experienced members,before doing anything
ZloY909 said:
Hello dear guru's =)
I have an HTC One international. Today i try to get root access and install custom recovery, whent i flash recovery i missed that chose a boot partition to install it. Now phone boots only into recovery, and from my PC, adb or fastboot don see it, but in usb devices its present.
Im on linux Ubuntu 13.04.
In phone dont have any backup.
Click to expand...
Click to collapse
you "fastboot flash boot recovery.img"? you may want to check this thread: http://forum.xda-developers.com/showthread.php?t=2478438&page=3
if that doesn't help, post back
Guys, we have to check if he can boot in bootloader/fastboot.
So, @ZloY909, if you're in recovery, adb can recognize your phone?
And, in CWM, there is the option: reboot bootloader?
As download mode you mean bootloader?
ZloY909 said:
Has the same problem, flashed CWM Recovery to the boot partiotion. Can you give me more info about that magic what you are done to cennect your phone to fastboot? =)
Thanks.
Best Regards.
Click to expand...
Click to collapse
fastboot shouldn't be affected.
when you connect your phone to the PC, does it the text in bootloader change from "FASTBOOT" to "FASTBOOT USB"
Guich said:
Guys, we have to check if he can boot in bootloader/fastboot.
So, @ZloY909, if you're in recovery, adb can recognize your phone?
And, in CWM, there is the option: reboot bootloader?
As download mode you mean bootloader?
Click to expand...
Click to collapse
adb or fastboot is not recognize my phone. In cwm recovery i have only reboot option or reboot into recovery. I have the same situation as tha developer in other post.
when i chose boot to recovery i have : "screen with a phone icon and a green image like i can connect via usb or something, but then it turns red after about 30 seconds"
ZloY909 said:
adb or fastboot is not recognize my phone. In cwm recovery i have only reboot option or reboot into recovery. I have the same situation as tha developer in other post.
when i chose boot to recovery i have : "screen with a phone icon and a green image like i can connect via usb or something, but then it turns red after about 30 seconds"
Click to expand...
Click to collapse
"screen with a phone icon and a green image like i can connect via usb or something, but then it turns red after about 30 seconds" -> that's stock recovery
Before, when you are in bootloader (image attached), are you able to "fastboot devices" and it shows up? because the bootloader is not affected by the recovery.
basically "fastboot flash boot recovery.img" put the custom recovery where the kernel is supposed to be.
First thing you need to get/confirm working is bootloader/fastboot.
ZloY909 said:
adb or fastboot is not recognize my phone. In cwm recovery i have only reboot option or reboot into recovery. I have the same situation as tha developer in other post.
when i chose boot to recovery i have : "screen with a phone icon and a green image like i can connect via usb or something, but then it turns red after about 30 seconds"
Click to expand...
Click to collapse
In cwm adb will work.
So i think you have some issue with drivers.
And, however, if you turn off the phone, you can't access in bootloader with a longpress of power and vol-?
Hey, so I'm the one who had this same situation. What I had to do from what I recall is go to CWM screen, cleared the cache, even in advanced the davlik cache, then I believe (and you might have to try different combinations of this, because I don't 100% remember as I had before tried so many different ways) I unmounted the system mount, then went to reboot from the first screen to get to the bootloader (hold power button and volume down). After this, I clicked on Fastboot and it then went to Fastboot USB. This is where you should be able to connect. Don't leave this screen until you flash the recovery in the right place and then properly install the ROM. Let me know if you get to at least connecting and I can even send over an image for your boot, so you can at least get your phone back.
It can be done, I had the same situation so your phone is not bricked. Just keep working at it.
herrfricke said:
Hey, so I'm the one who had this same situation. What I had to do from what I recall is go to CWM screen, cleared the cache, even in advanced the davlik cache, then I believe (and you might have to try different combinations of this, because I don't 100% remember as I had before tried so many different ways) I unmounted the system mount, then went to reboot from the first screen to get to the bootloader (hold power button and volume down). After this, I clicked on Fastboot and it then went to Fastboot USB. This is where you should be able to connect. Don't leave this screen until you flash the recovery in the right place and then properly install the ROM. Let me know if you get to at least connecting and I can even send over an image for your boot, so you can at least get your phone back.
It can be done, I had the same situation so your phone is not bricked. Just keep working at it.
Click to expand...
Click to collapse
I will check this out. Thanks for your reply.
Now i reinstall to win8, reinstall drivers and adb.
Guich said:
In cwm adb will work.
So i think you have some issue with drivers.
And, however, if you turn off the phone, you can't access in bootloader with a longpress of power and vol-?
Click to expand...
Click to collapse
Thanks for your reply. This help me to get to the bootloader.
Now i try to flash boot.img into boot =)
Ok. I have working phone =)
Thanks for yours replies.

[Q] Moto x flashing recovery snafu - please help

RESOLVED!
so I just got my moto x dev edition, unlocked the bootloader, and then screwed it up...
i tried flashing the recovery as described here, http://forum.xda-developers.com/showthread.php?t=2458451 but didn't realize/understand that fastboot and mfastboot were not interchangeable. it looked like it went ok, but I wasn't able to reboot into recovery. so, now on boot to recovery i get the little android on his back with a red triangle. i'm pretty sure that the stock recovery is gone, but cwm is not installed either. which brings me to my next little problem...
so i did some reading and got mfastboot installed and thought ok I just need to reflash cwm on phone again. problem is, now the phone won't stay in usb debug mode so that i can see it when fastbooted. that is, when i reboot the phone into fastboot by holding the power/vol down I can't see the phone when doing 'adb devices', and whem I let it boot up i see usb debug is switched off. when i switch it on, then i can see the phone from adb again, but when i try to 'reboot bootloader' it gives me a not allowed error.
at this point i'm just sick and afraid i bricked it. i am coming from a galaxy nexus and never had anything like this happen before. i truly appreciate any help here, at this point i feel like puking and dreading telling the wife i just blew 450.... :-/
ps i'm on mac 10.7 so if i need rsd it will be via a virtual machine....
herrdrchili said:
so I just got my moto x dev edition, unlocked the bootloader, and then screwed it up...
i tried flashing the recovery as described here, http://forum.xda-developers.com/showthread.php?t=2458451 but didn't realize/understand that fastboot and mfastboot were not interchangeable. it looked like it went ok, but I wasn't able to reboot into recovery. so, now on boot to recovery i get the little android on his back with a red triangle. i'm pretty sure that the stock recovery is gone, but cwm is not installed either. which brings me to my next little problem...
so i did some reading and got mfastboot installed and thought ok I just need to reflash cwm on phone again. problem is, now the phone won't stay in usb debug mode so that i can see it when fastbooted. that is, when i reboot the phone into fastboot by holding the power/vol down I can't see the phone when doing 'adb devices', and whem I let it boot up i see usb debug is switched off. when i switch it on, then i can see the phone from adb again, but when i try to 'reboot bootloader' it gives me a not allowed error.
at this point i'm just sick and afraid i bricked it. i am coming from a galaxy nexus and never had anything like this happen before. i truly appreciate any help here, at this point i feel like puking and dreading telling the wife i just blew 450.... :-/
ps i'm on mac 10.7 so if i need rsd it will be via a virtual machine....
Click to expand...
Click to collapse
so, if i understand you correctly, u've held down the volume down button and power button? becasue that's your fastboot. That's where you need to be to use RSD, and that's what i'd do.
ADB commands aren't used in fastboot mode. You should be able to see the device in fastboot mode with the command fastboot devices. Also, remember that the stock rom will try to restore the stock recovery when it is booted so if you flash recovery in fastboot mode then let the stock rom boot it will reflash the stock recovery which shows you the little droid and the red triangle.
You should still be okay though. Shut the phone off and boot into fastboot manually with power and volume down. Reflash the recovery. I know there are warnings about using mfastboot but I used standard fastboot before I saw those and didn't have an issue. From the fastboot screen after flashing the recovery, use volume down to get to highlight recovery and then press volume up to select, not power. Power will just do a standard reboot.
If you flashed twrp recovery then rebooting system will prompt you to install su. I think clockwork does the same thing. Letting the recovery install su will also prevent the stock recovery from getting restored and from there you should be good.
herrdrchili said:
so I just got my moto x dev edition, unlocked the bootloader, and then screwed it up...
i tried flashing the recovery as described here, http://forum.xda-developers.com/showthread.php?t=2458451 but didn't realize/understand that fastboot and mfastboot were not interchangeable. it looked like it went ok, but I wasn't able to reboot into recovery. so, now on boot to recovery i get the little android on his back with a red triangle. i'm pretty sure that the stock recovery is gone, but cwm is not installed either. which brings me to my next little problem...
so i did some reading and got mfastboot installed and thought ok I just need to reflash cwm on phone again. problem is, now the phone won't stay in usb debug mode so that i can see it when fastbooted. that is, when i reboot the phone into fastboot by holding the power/vol down I can't see the phone when doing 'adb devices', and whem I let it boot up i see usb debug is switched off. when i switch it on, then i can see the phone from adb again, but when i try to 'reboot bootloader' it gives me a not allowed error.
at this point i'm just sick and afraid i bricked it. i am coming from a galaxy nexus and never had anything like this happen before. i truly appreciate any help here, at this point i feel like puking and dreading telling the wife i just blew 450.... :-/
ps i'm on mac 10.7 so if i need rsd it will be via a virtual machine....
Click to expand...
Click to collapse
ok then - i guess rsd has potential?
xpsychox said:
so, if i understand you correctly, u've held down the volume down button and power button? becasue that's your fastboot. That's where you need to be to use RSD, and that's what i'd do.
Click to expand...
Click to collapse
i can reboot into fastboot, but adb can't see the phone. I'll start trying to setup rsd and and see if it can do any better. any good links you know to get up to speed on that would be appreciated. if you know how to simply reflash the recovery via rsd that would be helpful too - thanks in advance!
herrdrchili said:
i can reboot into fastboot, but adb can't see the phone. I'll start trying to setup rsd and and see if it can do any better. any good links you know to get up to speed on that would be appreciated. if you know how to simply reflash the recovery via rsd that would be helpful too - thanks in advance!
Click to expand...
Click to collapse
the sites that I know of are for the device I have, a non devliper edition... I don't know if it makes a difference, I don't wanna make anything worse.
thanks for the sanity check,,,
btdonovan said:
ADB commands aren't used in fastboot mode. You should be able to see the device in fastboot mode with the command fastboot devices. Also, remember that the stock rom will try to restore the stock recovery when it is booted so if you flash recovery in fastboot mode then let the stock rom boot it will reflash the stock recovery which shows you the little droid and the red triangle.
You should still be okay though. Shut the phone off and boot into fastboot manually with power and volume down. Reflash the recovery. I know there are warnings about using mfastboot but I used standard fastboot before I saw those and didn't have an issue. From the fastboot screen after flashing the recovery, use volume down to get to highlight recovery and then press volume up to select, not power. Power will just do a standard reboot.
If you flashed twrp recovery then rebooting system will prompt you to install su. I think clockwork does the same thing. Letting the recovery install su will also prevent the stock recovery from getting restored and from there you should be good.
Click to expand...
Click to collapse
THANKS! just needed another set of eyes - man i need to not try doing this after a long day again i really appreciate your help. i got it now!
herrdrchili said:
THANKS! just needed another set of eyes - man i need to not try doing this after a long day again i really appreciate your help. i got it now!
Click to expand...
Click to collapse
Glad I could help!

Need help to relock the Razer Phone 2 bootloader.

Hi, Im kinda new to this bootloader thingy. What happen is, i updated the razer phone 2 to Pie, but notice wifi and sim card cant be detect. Even factory reset fails. So i thought of flashing new image on it. KINDA easy on my oneplus, but im not sure where I gone wrong on this razer phone 2, i accidentally unlock the bootloader. NOW the problem is HOW to relock it back? i been follow all youtube and guides all over the place but still fails.
The state of device atm, cannot be boot into Download Mode. Everytime I plug in usb c from Windows, it will boot into unlock bootloader warning page, and continue boot into the homescreen. testing the adbtools, fastboot also to no avail. Can anyone help and guide me how to relocking it back? Maybe i type wrongly on cmd or maybe other android steps not similar to razer one etc....:crying:help much appreciated.
Hold volume down while turning on. Then fastboot flashing lock.
the stock usb doesnt send things correctly in BL mode, https://www.amazon.com/Blackweb-3-Foot-Charge-Cable-Connector/dp/B07SG7P3KZ/ worked for me. with the correct usb cable you should be able to perform the lock commands correctly. can you give us more detail of what you tried on this phone so we know if we need to provide you additional information?
https://developer.razer.com/razer-phone-dev-tools/general-instructions/
"Locking the Bootloader
Locking the bootloader is recommended for security reasons. Some applications will not work with an unlocked bootloader.
Start the Phone in Download Mode with one of the following methods:
Using the adb tool: With the Phone powered on, execute: adb reboot bootloader Enter Download Mode:
Plug in a USB cable to connect your Razer Phone to your computer, Power Off the Phone, then turn it on and immediately press and hold the Volume Down button until “Download Mode” appears on screen.
Lock the critical partitions of the Bootloader first by running this command: fastboot flashing lock_critical
Your Razer Phone will show you a confirmation screen. Use the Volume Up/Volume Down buttons for navigation, and press the Power button to select. Your Phone will reboot."
I can't seem to enter download mode. All I have is fastboot mode and the option to either reboot, close the phone or enter recovery mode. I would really like to lock the bootloader, but I can't seem to be able to detect my phone on my PC even though I installed the fastboot driver.
The_Vinlander said:
I can't seem to enter download mode. All I have is fastboot mode and the option to either reboot, close the phone or enter recovery mode. I would really like to lock the bootloader, but I can't seem to be able to detect my phone on my PC even though I installed the fastboot driver.
Click to expand...
Click to collapse
You must use a USB 2.0 port. The RP2 isn't detected by fastboot when connected to a 3/3.1 port.
Reznor7 said:
You must use a USB 2.0 port. The RP2 isn't detected by fastboot when connected to a 3/3.1 port.
Click to expand...
Click to collapse
I tried this, but to no avail. I tried with 2 cables I had and it keeps telling me < waiting for device > when I enter this command; fastboot flashing lock_critical
The_Vinlander said:
I tried this, but to no avail. I tried with 2 cables I had and it keeps telling me < waiting for device > when I enter this command; fastboot flashing lock_critical
Click to expand...
Click to collapse
You need to go into your device manager and select [ android bootloader interface ] while in fastboot

Volume keys doesn't work, how do I get to to flash mode?

Hi,
my hardware volume keys do not work anymore and I would like to upgrade the firmware so I can upgrade to LineageOS 17.1 (from an old los 15) but to do so with Newflasher I've got to get into flash mode. Is there a way to do so without the volume down key pressed? i.e. with adb or fastboot?
Thanks
I believe it is:
adb reboot bootloader
I haven't tested it though. Maybe that gets you into fastboot mode.
Ephesus said:
I believe it is:
adb reboot bootloader
I haven't tested it though. Maybe that gets you into fastboot mode.
Click to expand...
Click to collapse
Nope. Doesn't seem so. Tried it and newflasher doesn't work on bootloader mode. Also the led light is blue at this mode and as far as I understand it should be green in flash mode. Any other ideas?
Thanks
You are correct, fastboot (blue light) and sony flash mode (green light) are different. Fastboot needs to be accessed with the things using the fastboot protocol and newflasher needs the sony flash mode.
I don't have an answer to how to get into flash mode, but I wonder if the Sony PC Companion's repair could get you back to stock and then you can use fastboot to flash recovery, etc. I haven't used it in a long time so, it may require you to hold vol-dn also.
Once upon a time, I think, flashtool could work through fastboot mode though. Since your bootloader is unlocked that's an avenue to try. If that can't do firmware, another option might be to have someone on the correct version copy their firmware, bootloader, whatever partitions for you to copy over. But that would only work if there's no other changes outside those partitions.

[FIXED] Fastboot? Recovery bootlooping, but never getting there

Hi All, I need fastboot!
Perhaps someone can help with my brick? I've unlocked the bootloader, installed TWRP and had lineageOS 18.1 installed once. The screen was dim so I tried to flash DotOS. And got a "failed to mount /tmp/com.android.resolv.apex to loop device /dev/block/loop16" error so I tried to reinstall stock 57 ROM.
I did "fastboot flash recovery boot.img" with the decrypted boot.img hoping to get colourOS recovery.
The phone is now bootlooping trying to get into recovery mode. It won't power off or respond to button presses except vol up + vol down seems to delay the reboot on a blank screen.
I was hoping to get to fastboot mode to flash TWRP. Can anyone help? Should I surrender and accept the bricking?
you can get back to stock by install the stock rom, vendor, and kernel with adb drivers and commands.
or
if your mobile is MIUI you can just use the software to revert back to stock rom remember it re-locks the bootloader and again you need to unlock
The phone is currently boot looping.
I can't even turn it off.
It displays RealME/Android logo, then small "> RECOVERY MODE" text at bottom, then "Orange State" text. Repeat..
It has no response to a usb cable - no usb messages in dmesg. So it is not detected by adb or fastboot.
When the battery finally goes flat, my only hope is that I can get fastboot to flash TWRP into the recovery partition. I am not confident of this :-(
frolyx said:
The phone is currently boot looping.
I can't even turn it off.
It displays RealME/Android logo, then small "> RECOVERY MODE" text at bottom, then "Orange State" text. Repeat..
It has no response to a usb cable - no usb messages in dmesg. So it is not detected by adb or fastboot.
When the battery finally goes flat, my only hope is that I can get fastboot to flash TWRP into the recovery partition. I am not confident of this :-(
Click to expand...
Click to collapse
did you ever get this solved and fixed? i have accidently done the same thing.
hey guys follow this youtube
managed to unbrick my phone
smiley.raver said:
did you ever get this solved and fixed? i have accidently done the same thing.
Click to expand...
Click to collapse
Not yet, but I will try the youtube method above..
This recovered the Phone!
But, win10 reported the MCT extractor contained a worm (the python script under linux didn't work). I'm not sure I can trust this phone 100% from now on LOL!
the bypass just deactivates mtk hardware verificaton as normally they have a special dongle they use with the software download
I havent had any issues
I will upload thw bypass i use which doesnt havw any virus

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