Develop Bugs

Cannot Get Into Bootloader

Hello
Im currently trying to flash a new radio but I cannot enter the Bootloader for some reason. Now when I press down and power on I go straight into ClockworkMod Recovery and not bootloader so I cannot access Fastboot. Any ideas or am I being a complete idiot here.
Cheers
EDIT: Well have managed to enter bootloader but damned if I can figure out how to bring the command prompt up lol

First remove battery then hold volume down key and power key. Probably U have enabled "fast boot" in phone settings -> application.
On bootloader moving through volume up and down key. Approve the choice power key.

Hello
Thats done the trick mate thanks very much.

Marshall1975 said:
EDIT: Well have managed to enter bootloader but damned if I can figure out how to bring the command prompt up lol
Click to expand...
Click to collapse
Well that all depends on what operating system you have on your computer. If I can assume Windoze 7 press the start key, type in "cmd" and press enter.
You should now have the elusive command prompt. Now you just gotta do "cd /path/to/fastboot" followed by your fastboot commands.

bad flash - stuck in os

hey guys,
i was bored and flashed a .zip on my phone and now I'm no longer bored. Long story, short... I'm booted into the os (almost) with constant errors popping up. I can't get the power button down for 10 seconds to reboot phone and i want to get back to recovery to flash by back up. How can I use terminal (mac) to force back into recovery if phone is not in mode for adb to recognize phone?
Thanks in advance.

Try hold power button + volume up to force reboot. Once the screen goes black release those buttons and hold volume down button to go to hboot

Thanks for your reply. Seems the power + volume is not be recognized. Is there a way with fastboot or adb?
Otherwise, I guess I wait until power drain.

andason said:
Thanks for your reply. Seems the power + volume is not be recognized. Is there a way with fastboot or adb?
Otherwise, I guess I wait until power drain.
Click to expand...
Click to collapse
Power + Volume Up should work. But as you asked for adb/fastboot
1) "adb devices" to check if device is recognized
2) "abd reboot bootloader" so the phone reboots into bootloader
3) go to recovery and try a reflash

andason said:
Thanks for your reply. Seems the power + volume is not be recognized. Is there a way with fastboot or adb?
Click to expand...
Click to collapse
This should always work as long as the screen is on. It might take 10 seconds or more, so you may not be holding the buttons long enough.
Alternately, you can use:
adb reboot bootloader
or
adb reboot recovery
There is no required more for adb commands, as long as the screen is on. Fastboot on the other hand, requires the phone to be in fastboot mode.
What did you flash? Was it a ROM, and if so did you do a full wipe (data, cache and Dalvik) before flashing?

Thanks for all the replies. It finally died and I was able to jump back into recovery. I was trying to flash a .zip (one+ one theme) to my rom and some things about it (audiofx) was not liked. I guess adb could not recognize the phone since it was basically booted into the os. I just thought there was a way to still use adb or fast boot to push it into recovery. I did not get to try adb reboot boot loader, but would adb recognize phone even with this command?

andason said:
Thanks for all the replies. It finally died and I was able to jump back into recovery. I was trying to flash a .zip (one+ one theme) to my rom and some things about it (audiofx) was not liked. I guess adb could not recognize the phone since it was basically booted into the os. I just thought there was a way to still use adb or fast boot to push it into recovery. I did not get to try adb reboot boot loader, but would adb recognize phone even with this command?
Click to expand...
Click to collapse
Glad it worked and that we could help a
adb reboot bootloader should be recognized nearly any time.
Sent from my HTC One_M8 using XDA Free mobile app

Fastboot mode

Hello. In order to test a custom recovery for LG K420n I have to enter fastboot mode and then use the "fastboot oem unlock" command to unlock bootloader. The problem is I cannot enter fastboot mode. I tried all the possible commands and button combinations (http://www.hardreset.info/devices/lg/lg-k10-lte/fastboot-mode/). Anyone can help?

ZemoDroid said:
Hello. In order to test a custom recovery for LG K420n I have to enter fastboot mode and then use the "fastboot oem unlock" command to unlock bootloader. The problem is I cannot enter fastboot mode. I tried all the possible commands and button combinations (http://www.hardreset.info/devices/lg/lg-k10-lte/fastboot-mode/). Anyone can help?
Click to expand...
Click to collapse
Can u try the same steps, but: holding the Volume "UP" key for a few seconds

ZemoDroid said:
Hello. In order to test a custom recovery for LG K420n I have to enter fastboot mode and then use the "fastboot oem unlock" command to unlock bootloader. The problem is I cannot enter fastboot mode. I tried all the possible commands and button combinations (http://www.hardreset.info/devices/lg/lg-k10-lte/fastboot-mode/). Anyone can help?
Click to expand...
Click to collapse
the trick is to completely power down your device, then Hold down the volume up button (or down perhaps. i don't remember exactly) and then plug in the usb cable at the same time.. I figured it out when i was trying to root my device a few months ago and completely messed it up before using the lg pc bridge to recover it again

salaigeethan666 said:
the trick is to completely power down your device, then Hold down the volume up button (or down perhaps. i don't remember exactly) and then plug in the usb cable at the same time.. I figured it out when i was trying to root my device a few months ago and completely messed it up before using the lg pc bridge to recover it again
Click to expand...
Click to collapse
This is for download mode not fastboot.
Sent from my LG K10 using XDA Labs

ZemoDroid said:
This is for download mode not fastboot.
Sent from my LG K10 using XDA Labs
Click to expand...
Click to collapse
No. Fastboot does exist.. cos i entered it once.. im just unable to say whether it was vol down or up..

In ADB
adb devices
ENTER
if ok?
abd reboot bootloader
ENTER
you be fastboot mode.. (look display phone)
for unlock
fastboot oem unlock
ENTER
or
fastboot flashing unlock
ENTER
(in phone, press Vol UP)

erick0023 said:
In ADB
adb devices
ENTER
if ok?
abd reboot bootloader
ENTER
you be fastboot mode.. (look display phone)
for unlock
fastboot oem unlock
ENTER
or
fastboot flashing unlock
ENTER
(in phone, press Vol UP)
Click to expand...
Click to collapse
I tried that many times already. I need to unlock bootloader to enter fastboot but I can't enter it because of locked bootloader...loop.

ZemoDroid said:
I tried that many times already. I need to unlock bootloader to enter fastboot but I can't enter it because of locked bootloader...loop.
Click to expand...
Click to collapse
No. Locked bootloader doesn't screw you. It's able to boot into bootloader/fastboot mode even if it's been locked.

-power on device presing (vol- & power) until logo image appear, release and press again power key by the second
-format device screen apper.. chose : format yes , confirm
-just appear android image formating.. press the 3 key alternatively
-then enter to stock recovery ; and u can chose fastboot or sideloader mode
* i dont know the exactly combination key press. but u must try a couple intents..

mosta00 said:
-power on device presing (vol- & power) until logo image appear, release and press again power key by the second
-format device screen apper.. chose : format yes , confirm
-just appear android image formating.. press the 3 key alternatively
-then enter to stock recovery ; and u can chose fastboot or sideloader mode
* i dont know the exactly combination key press. but u must try a couple intents..
Click to expand...
Click to collapse
That doesnt work for newer phones.
---------- Post added at 04:31 PM ---------- Previous post was at 04:30 PM ----------
berkantkz said:
No. Locked bootloader doesn't screw you. It's able to boot into bootloader/fastboot mode even if it's been locked.
Click to expand...
Click to collapse
How?

its worked on my LG k10 430H (mtk divice)

mosta00 said:
its worked on my LG k10 430H (mtk divice)
Click to expand...
Click to collapse
How?

mosta00 said:
-power on device presing (vol- & power) until logo image appear, release and press again power key by the second
-format device screen apper.. chose : format yes , confirm
-just appear android image formating.. press the 3 key alternatively
-then enter to stock recovery ; and u can chose fastboot or sideloader mode
* i dont know the exactly combination key press. but u must try a couple intents..
Click to expand...
Click to collapse
pvineeth97 said:
How?
Click to expand...
Click to collapse
This! works for me, (dont release "vol - key"; just "power key by a second")

this works for me
pvineeth97 said:
How?
Click to expand...
Click to collapse
-power on device presing (vol- & power) until logo image appear, release and press again power key by the second
-format device screen apper.. chose : format yes , confirm
-just appear android image formating.. press vol- & power, and just after that vol+ till u see text about formating
let it finish and then it will show up recovery screen. choose reboot into bootloader, connect it to pc, open cmd and boot into twrp

ilicu33 said:
-power on device presing (vol- & power) until logo image appear, release and press again power key by the second
-format device screen apper.. chose : format yes , confirm
-just appear android image formating.. press vol- & power, and just after that vol+ till u see text about formating
let it finish and then it will show up recovery screen. choose reboot into bootloader, connect it to pc, open cmd and boot into twrp
Click to expand...
Click to collapse
It might be easy in MTK but not in Qualcomm lol. We even tried "adb reboot recovery". It just shows a dead android symbol. But even randomly pressing those buttons doesn't allow us to go into recovery. MTK users have a upper hand lol.

ilicu33 said:
-power on device presing (vol- & power) until logo image appear, release and press again power key by the second
-format device screen apper.. chose : format yes , confirm
-just appear android image formating.. press vol- & power, and just after that vol+ till u see text about formating
let it finish and then it will show up recovery screen. choose reboot into bootloader, connect it to pc, open cmd and boot into twrp
Click to expand...
Click to collapse
Urs MTK?

tick oem unlock
ZemoDroid said:
I tried that many times already. I need to unlock bootloader to enter fastboot but I can't enter it because of locked bootloader...loop.
Click to expand...
Click to collapse
make sure you ticked the OEM unlock and USB debugging at the developer option

ilicu33 said:
-power on device presing (vol- & power) until logo image appear, release and press again power key by the second
-format device screen apper.. chose : format yes , confirm
-just appear android image formating.. press vol- & power, and just after that vol+ till u see text about formating
let it finish and then it will show up recovery screen. choose reboot into bootloader, connect it to pc, open cmd and boot into twrp
Click to expand...
Click to collapse
Hello, could you be more precise please. Everything is clear till you press Confirm over "Factory reset" - after that I got colorful ring with "Erasing" sign for a few seconds and then - long run on LG logo before system boots. When and what should I press, to get into bootloader?

same problem here I have qualicom LGK10 420DS I have followed saveral method to enter into recovery but didn't workout.
can some one help with correct steps.
---------- Post added at 01:43 PM ---------- Previous post was at 01:22 PM ----------
vj4mqntm said:
same problem here I have qualicom LGK10 420DS I have followed saveral method to enter into recovery but didn't workout.
can some one help with correct steps.
Click to expand...
Click to collapse
Hi!
I have a LGK10 420DS (m216) MSM8916 Indian version I am unable to boot into bootloader or recovery by using adb / fastboot or by volume and power kay, as you are aware LG is not supporting any software update. I want to flash CustomROM and trying to unlock bootloader with different method but unable to enter in recovery, plz. some one can help out.

volume - whilst pluging usb into computer = fastboot mode
volume + whilst plugging = download mode
this works in new models, tested in a lg aristo 2

Stuck in recovery after ADB with broken power button

Its very complicated. My T705's power button was damaged by water. And i flashed Stock MM rom with odin. It was fine after flashing, the tablet boot into the os properly, work very well in the os.
But then i want to wipe the cache and data after that, so i was using the code"adb reboot to recovery" to get into recovery mode because my power button was broken. (I thought it can be using home button to select in recovery mode)
But the nightmare is i can't select anything in recovery mode which requiring a power button. So i can't wipe the cache, also can't select the option to reboot my tablet...... I've tried to hold both the volume down and home key to go to the download mode menu, and select restart by holding volume down, but it go to recovery again even after removing the battery, i think it's because the adb command.
And the strangest thing is i can't use my volume up button in download mode menu, so sadly i can't flash the rom again,:crying: but the volume up is working well in recovery and in the os......
Is there anyway to prevent the tablet to boot into the recovery again? I'm quite sure it's not the problem when flashing MM rom, the problem should be the adb command makes my tablet boot into recovery until i change the boot setting in recovery mode.

hungpakto said:
Its very complicated. My T705's power button was damaged by water. And i flashed Stock MM rom with odin. It was fine after flashing, the tablet boot into the os properly, work very well in the os.
But then i want to wipe the cache and data after that, so i was using the code"adb reboot to recovery" to get into recovery mode because my power button was broken. (I thought it can be using home button to select in recovery mode)
But the nightmare is i can't select anything in recovery mode which requiring a power button. So i can't wipe the cache, also can't select the option to reboot my tablet...... I've tried to hold both the volume down and home key to go to the download mode menu, and select restart by holding volume down, but it go to recovery again even after removing the battery, i think it's because the adb command.
And the strangest thing is i can't use my volume up button in download mode menu, so sadly i can't flash the rom again,:crying: but the volume up is working well in recovery and in the os......
Is there anyway to prevent the tablet to boot into the recovery again? I'm quite sure it's not the problem when flashing MM rom, the problem should be the adb command makes my tablet boot into recovery until i change the boot setting in recovery mode.
Click to expand...
Click to collapse
Install twrp, you won't need a power button then.

ashyx said:
Install twrp, you won't need a power button then.
Click to expand...
Click to collapse
How to install when this tablet can't do anything now..
Can't select anything now, can't go into the os and use adb to boot into download mode

hungpakto said:
How to install when this tablet can't do anything now..
Can't select anything now, can't go into the os and use adb to boot into download mode
Click to expand...
Click to collapse
If your power button doesn't work how do you turn the device on after removing the battery?

unified android toolkit has a reboot device option...

mordeith said:
unified android toolkit has a reboot device option...
Click to expand...
Click to collapse
That would only work if you could actually use adb.

ashyx said:
That would only work if you could actually use adb.
Click to expand...
Click to collapse
probably would help,if i read all the posts before commentijng...but ive used it on random devices to reboot it..not soleley from adb

ashyx said:
If your power button doesn't work how do you turn the device on after removing the battery?
Click to expand...
Click to collapse
Holding vol down + home key can boot to the download mode menu.
But the device will automatically turn on after inserting the battery, no need to press any button, but the device only boot into recovery after i use the adb boot into recovery command.

hungpakto said:
Holding vol down + home key can boot to the download mode menu.
But the device will automatically turn on after inserting the battery, no need to press any button, but the device only boot into recovery after i use the adb boot into recovery command.
Click to expand...
Click to collapse
If that's the case that means the power button is stuck on or you wouldn't be able to power on or boot to Download mode.
All you need to do is flash the stock firmware or twrp and it will reboot back to the OS.

Hopefully I've got your fix:
When you insert the battery your device boots up, if so, insert the battery and press the correct key combo while the splash screen from logo.bin is showing to boot into the download mode.
After that flash TWRP latest version with Odin. Then when your phone again boots to recovery, chose Reboot -> System to boot Android.
---
If the above isn't applicable and you can start Android somehow, I will download either FlashFire or MobileOdin to flash another recovery/ROM.
Sent using Tapatalk

ashyx said:
If that's the case that means the power button is stuck on or you wouldn't be able to power on or boot to Download mode.
All you need to do is flash the stock firmware or twrp and it will reboot back to the OS.
Click to expand...
Click to collapse
And don't know why the volume up doesn't work in the download mode menu, stuck in the download mode menu and can't select the option "continue" to go into the download mode

hungpakto said:
Holding vol down + home key can boot to the download mode menu.
But the device will automatically turn on after inserting the battery, no need to press any button, but the device only boot into recovery after i use the adb boot into recovery command.
Click to expand...
Click to collapse
lot of problems can be fixed by samsung k300 tool ,disconect phone and start that tool and connect phone again and let the tool find the phone ,if found just click that icon and phone go to download mode and you can flash back stock firmware...that tool dont need adb enable just working usb cable ,i say working cant be fake...

no twrp and no adb function, need help!

so ive flashed liquid remix but forgot that adb doesnt work on that rom.
and i dont have flashed twrp installer aswell since i use to boot into rom first.
so im stuck in this rom without twrp, root so am i kinda bricked now?

krabban said:
so ive flashed liquid remix but forgot that adb doesnt work on that rom.
and i dont have flashed twrp installer aswell since i use to boot into rom first.
so im stuck in this rom without twrp, root so am i kinda bricked now?
Click to expand...
Click to collapse
Does fastboot devices see the phone if you key combo into bootloader? Do a flash-all (minus -w so you at least can save user data) of whatever monthly security patch you were on before.

sliding_billy said:
Does fastboot devices see the phone if you key combo into bootloader? Do a flash-all (minus -w so you at least can save user data) of whatever monthly security patch you were on before.
Click to expand...
Click to collapse
No it does not. That's the problem. Need to take out a new on ensurance

krabban said:
No it does not. That's the problem. Need to take out a new on ensurance
Click to expand...
Click to collapse
Are you sure about that. It is clear from your other post that you Re confusing fastboot and adb. adb works from a booted phone, while fastboot works from bootloader. Also, can you get to recovery? I highly doubt you are bricked, but there is definitely some confusion.
Turn off your Google Pixel 3 XL.
Press and hold the Power+Volume Down buttons until bootloader mode (image of an Android with Start above it) appears, then release.
Select Recovery mode. You can use the Volume buttons to cycle through the available options and the Power button to select. The device will flash the Google start screen momentarily and then restarts in Recovery mode.
If presented with an image of a broken Android with “No Command” printed on the screen, press and hold the Power button. Press the Volume Up button once. Then release the Power button.
From the Android Recovery screen, select Wipe data/factory reset.
Select Yes. Wait for several minutes for the factory data reset process to complete.
Select Reboot system now. Allow several minutes for the factory data reset and reboot processes to complete.
Set the phone up again.

sliding_billy said:
Are you sure about that. It is clear from your other post that you Re confusing fastboot and adb. adb works from a booted phone, while fastboot works from bootloader. Also, can you get to recovery? I highly doubt you are bricked, but there is definitely some confusion.
Turn off your Google Pixel 3 XL.
Press and hold the Power+Volume Down buttons until bootloader mode (image of an Android with Start above it) appears, then release.
Select Recovery mode. You can use the Volume buttons to cycle through the available options and the Power button to select. The device will flash the Google start screen momentarily and then restarts in Recovery mode.
If presented with an image of a broken Android with “No Command” printed on the screen, press and hold the Power button. Press the Volume Up button once. Then release the Power button.
From the Android Recovery screen, select Wipe data/factory reset.
Select Yes. Wait for several minutes for the factory data reset process to complete.
Select Reboot system now. Allow several minutes for the factory data reset and reboot processes to complete.
Set the phone up again.
Click to expand...
Click to collapse
Gonna try tonight. I just get no command when select recovery mode from os

krabban said:
Gonna try tonight. I just get no command when select recovery mode from os
Click to expand...
Click to collapse
"No command" is normal. It is the power and volume key combo from there that actually get you into the recovery menu. That combo timing can be a little tricky. Power, then quickly press and release volume up then release power. You should then see the recovery menu. You might even see your phone with adb devices and have the ability to sideload an OTA (to save user data), but given your current situation I think a factory reset is best,

sliding_billy said:
"No command" is normal. It is the power and volume key combo from there that actually get you into the recovery menu. That combo timing can be a little tricky. Power, then quickly press and release volume up then release power. You should then see the recovery menu. You might even see your phone with adb devices and have the ability to sideload an OTA (to save user data), but given your current situation I think a factory reset is best,
Click to expand...
Click to collapse
Thanks buddy. Gonna try I'll report back

your the man, thanks alot. was able to run flash all script in sideload . now im back at android 10

krabban said:
your the man, thanks alot. was able to run flash all script in sideload . now im back at android 10
Click to expand...
Click to collapse
Not sure what you mean by running flash-all in sideload (I assume you ran adb sideload from recovery or flash-all from bootloader), but I'm glad you are up and running.