Database Users

[Q] Can't boot into fastboot - how to solve this problem?

Good evening guys,
There's a really strange problem on my Huawei P9 Lite VNS-L31. I'm not able to boot into fastboot mode. I tried to boot with Power + Volume down and adb reboot bootloader, but in both cases it's just restarting in the normal way.
Another interesting fact: I unlocked the Bootloader, but there's no warning message before the boot animation as it should be. I had these warning some time ago and I'm not sure when it has stopped to warn. Maybe at flashing the B161 to a B160.
I'm currently on VNS-L31C432B160. Do you have any tips for me? How to boot into fastboot?
Thanks!
Vincent

I solved the problem! If anyone has the same problem, try the following:
Shut down your phone -> open ADB command prompt on your PC -> press and hold Volume Down button (nothing other!) -> connect the USB cable to your phone -> your phone should now be in fastboot -> "fasboot reboot"
Now I'm able to boot normal in fastboot again.
Problem solved - thanks!

borgerapper said:
I solved the problem! If anyone has the same problem, try the following:
Shut down your phone -> open ADB command prompt on your PC -> press and hold Volume Down button (nothing other!) -> connect the USB cable to your phone -> your phone should now be in fastboot -> "fasboot reboot"
Now I'm able to boot normal in fastboot again.
Problem solved - thanks!
Click to expand...
Click to collapse
I can't shutdown my phone ;(
I can't do anything, its won't boot and i'ts reboot when i click on power button

Are you able to boot into recovery by pressing and holding Volume and Power Up?

borgerapper said:
Are you able to boot into recovery by pressing and holding Volume and Power Up?
Click to expand...
Click to collapse
No, Whatever I do, him reboot normally, that just it my problem
But if i hold the 3 buttons, the update.app install , but if i remove my sdcard , he trying to install it, but he say error because she can't find the update.app

Ax3noX_ said:
No, Whatever I do, him reboot normally, that just it my problem
But if i hold the 3 buttons, the update.app install , but if i remove my sdcard , he trying to install it, but he say error because she can't find the update.app
Click to expand...
Click to collapse
i guess its just bad luck mate

thisshouldbenice said:
i guess its just bad luck mate
Click to expand...
Click to collapse
Hello, I know i'm late, but did you solved your problem ?

For fastboot with p9 lite:
PowerDown
eject a usb from PC
press VOL DOWN and INSERT USB in PC
let'go in fastboot

Is it possible to totally brick phone?
I have installed B170 version for VNS-L21, after it, in fastboot what I did was unlock phone with unlock code.
After restart my phone is only on screen:
"your device has been unlocked and can't be trusted"
"your device is booting now"
And nothings happen
I can't boot to
- erecovery - when I'm trying to boot by VolUp + Power its going to - "your device has been unlocked and can't be trusted" and "your device is booting now" and nothings happend
- install from dload - VolUp + VolDown + Power its going to - "your device has been unlocked and can't be trusted" and "your device is booting now" and nothings happend
- boot to fastboot because VolDown + Power is not working - its going to - "your device has been unlocked and can't be trusted" and "your device is booting now" and nothings happend
Even when I was connecting phone by usb cable to computer I have only info: <waiting for device> it looks like my phone isnt recognize.
Is there a possibility to help my phone ?

kosiak07 said:
Is it possible to totally brick phone?
I have installed B170 version for VNS-L21, after it, in fastboot what I did was unlock phone with unlock code.
After restart my phone is only on screen:
"your device has been unlocked and can't be trusted"
"your device is booting now"
And nothings happen
I can't boot to
- erecovery - when I'm trying to boot by VolUp + Power its going to - "your device has been unlocked and can't be trusted" and "your device is booting now" and nothings happend
- install from dload - VolUp + VolDown + Power its going to - "your device has been unlocked and can't be trusted" and "your device is booting now" and nothings happend
- boot to fastboot because VolDown + Power is not working - its going to - "your device has been unlocked and can't be trusted" and "your device is booting now" and nothings happend
Even when I was connecting phone by usb cable to computer I have only info: <waiting for device> it looks like my phone isnt recognize.
Is there a possibility to help my phone ?
Click to expand...
Click to collapse
Did you hold volume down and then plugged your phone to your PC ?

Have to try it , hope it works

I have your same problem, kosiak07. Can you tell me if it worked?

It's not working, when I hold volDown and then plugged usb cable to PC it's going to screen: "your device has been unlocked and can't be trusted" and "your device is booting now" and nothings happend.
I think the only solution will be change motherboard

Kosiak07 did you fix it or just bought neu Mainboard?
kosiak07 said:
It's not working, when I hold volDown and then plugged usb cable to PC it's going to screen: "your device has been unlocked and can't be trusted" and "your device is booting now" and nothings happend.
I think the only solution will be change motherboard
Click to expand...
Click to collapse
Kosiak07 did you fix it or just bought neu Mainboard?

borgerappers trick did it for me on BKL-L09C432-9.0.0.162.
Thanks!

borgerapper said:
I solved the problem! If anyone has the same problem, try the following:
Shut down your phone -> open ADB command prompt on your PC -> press and hold Volume Down button (nothing other!) -> connect the USB cable to your phone -> your phone should now be in fastboot -> "fasboot reboot"
Now I'm able to boot normal in fastboot again.
Problem solved - thanks!
Click to expand...
Click to collapse
Very Thanks Bro, it's worked for my Honor 7

borgerapper said:
I solved the problem! If anyone has the same problem, try the following:
Shut down your phone -> open ADB command prompt on your PC -> press and hold Volume Down button (nothing other!) -> connect the USB cable to your phone -> your phone should now be in fastboot -> "fasboot reboot"
Now I'm able to boot normal in fastboot again.
Problem solved - thanks!
Click to expand...
Click to collapse
Still works on P20 Pro ! Thanks

frantyk said:
Still works on P20 Pro ! Thanks
Click to expand...
Click to collapse
I have same problem withmy asus,, is can solve with this method?

Stuck at boot screen TWRP

Hii I have a open bootliader and TWRP 3.0.2-r3 on my phone and this morning recieved a update to android 7.0 I did that and it asked my to restart my phone when I restarted my phone got stuck at "Warning Bootloader Unlocked" screen
I couldnt restard it by pressing Vol down and power key.
it is stuck untill battery runs out
please help what to do.

vinaykeasri said:
Hii I have a open bootliader and TWRP 3.0.2-r3 on my phone and this morning recieved a update to android 7.0 I did that and it asked my to restart my phone when I restarted my phone got stuck at "Warning Bootloader Unlocked" screen
I couldnt restard it by pressing Vol down and power key.
it is stuck untill battery runs out
please help what to do.
Click to expand...
Click to collapse
You can't update modified firmware i must be stock for OTAs. If vol down + power key don't work, try this method (make sure battery is not drained out) - take your phone while it's off, press and hold vol down and vol up buttons together and plug it into computer via USB - it should boot in fastboot mode.

"Your device is corrupt.."

"It can't be trusted and my not work properly"
Hi,
I unlocked the bootloader and flashed twrp but can't boot the phone anymore.
It only starts when pressing power button + volume up. Then I get following message two times before I get the third, final message mentioned in the headline:
Code:
Your device has been unlocked and can't be trusted
After that it tells my to press the power button to continue -> phone goes off.
Can't connect to adb shell, so what can I do?
BR
Michael

happyass**** said:
"It can't be trusted and my not work properly"
Hi,
I unlocked the bootloader and flashed twrp but can't boot the phone anymore.
It only starts when pressing power button + volume up. Then I get following message two times before I get the third, final message mentioned in the headline:
Code:
Your device has been unlocked and can't be trusted
After that it tells my to press the power button to continue -> phone goes off.
Can't connect to adb shell, so what can I do?
BR
Michael
Click to expand...
Click to collapse
Can you get into recovery? If so, I would say connect phone in recovery, (will show up on PC as mtp device), then copy anything you don't want to lose. Then do a full wipe, and flash stock rom, or custom rom and see if the message is still there.

Managed to enter recovery for once. Flashed Omnirom but know it stucks at the 'Sony screen'.
Can't get into recovery anymore.

I did it!
It works!
Don't ask me how. Wild keypress combinations and luck.

I think its related to sony drm, you have to flash genesis kernel for it to work well, anyway good luck

p9 stuck in "Your device has been unlocked and can't be trusted" help!!!!!

Im sorry if i type bad but im so frustrated and sad right now.
I downloaded "SRKToolHuawei-STABLE-V1.3-20160619"
My phone was already unlocked so i relocked it again.
that went well
But then i unlocked it again and now its stuck on your device is booting now...
So i restarted it many times now and nothing is happening.
I cant fastboot cause it says my phone couldn't be found.
I need help! i just got this phone and im so stressed right now. Any help will be appreciated! Thank you!
Edit:
Just to make it clear. I was trying to install TWRP.
Im new to this and everything was so messy.
I flashed it a bunch of times but it didn't install so i relocked it and unlocked it and this happend.
currently im waiting for it to drain and ill see what happens

Hello. Long press POWER to reboot and then release and quickly long press both VOL+ and VOL- simultaneously. It should appear an update screen with a failed message and –the most important thing– a restart button at the bottom. Press it.
Now the phone should start Android normally...
alesbabnik said:
Im sorry if i type bad but im so frustrated and sad right now.
I downloaded "SRKToolHuawei-STABLE-V1.3-20160619"
My phone was already unlocked so i relocked it again.
that went well
But then i unlocked it again and now its stuck on your device is booting now...
So i restarted it many times now and nothing is happening.
I cant fastboot cause it says my phone couldn't be found.
I need help! i just got this phone and im so stressed right now. Any help will be appreciated! Thank you!
Edit:
Just to make it clear. I was trying to install TWRP.
Im new to this and everything was so messy.
I flashed it a bunch of times but it didn't install so i relocked it and unlocked it and this happend.
currently im waiting for it to drain and ill see what happens
Click to expand...
Click to collapse

ernestoamaya said:
Hello. Long press POWER to reboot and then release and quickly long press both VOL+ and VOL- simultaneously. It should appear an update screen with a failed message and –the most important thing– a restart button at the bottom. Press it.
Now the phone should start Android normally...
Click to expand...
Click to collapse
I think i know what i did wrong.
it was a old version of twrp i think. so it couldn't boot into it. so i had wait for it to drain and then boot it up again. I got trwp working now!

Hi! I have the same problem. The phone was drained but when i charge It again It tries to start normally, but then starts trying ti enter into recovery again.
so who did you solve It exactly?
what buttons did you pushed when the phone starts again?
Thani you

For anyone pretty much, who has ****ed up his Huawei P9:
I got to the state where I could only enter Fastboot mode (Press vol- and connect power cable). When I tried to start the phone / go into recovery it would only display the "Your device has been unlocked and can't be trusted" Message. My mistake was to relock the bootloader in an attempt to get the recovery to work.
I looked for hours for the answer, here is what worked for me:
follow this tutorial (the "update firmware" part)
German
English
But with real precision, every step.
If you have a european unbranded L09 you should be fine using the firmware you can find on this site:
https://thedroidguru.com/download-install-huawei-p9-b394-nougat-update-europe/
if not you gotta find the full firmware (3 files!!) yourself - good luck!
If you only want to go back to stock you should be fine afterwards.
If you want to install twrp for root/custom rom/... follow these steps after installing twrp with the tool:
Upon flashing TWRP, FIRST THING YOU MUST DO is rebooting to TWRP. If you don't do that, stock Recovery will ovewrite TWRP.
Find instructions in the TWRP threads how to enforce immediate booting to TWRP, upon you flashed it:
-Type on the PC: fastboot reboot -but don't press Enter yet.
-Press and keep pressing Vol+ and Power buttons together on the phone
-Press Enter on the PC and then immediately unplug USB cabel.
-When phone shows Booting, release Power but keep pressing Vol+. button
Hope this helps, I don't take responsability for anything, happy flashing!

mate 9 was bricked, any help?

before brick, it had being prompted for a while to upgrade the system software, I always tab later to postpone it. but yesterday accidentally hit the "upgrade now" then it was bricked after the phone was rebooted.
the screen stayed at the huawei logo and powered by Android at the bottom. I am able to push/hold the power button to power it off, but not able to power it up by any buttons or combination. it will automatically turn on (randomly) and stayed at the huawei logo for ever.
when the phone is on at the Huawei logo, connecting it to PC but either "adb devices -l" or "fastboot devices" shows nothing, no devices.
could anyone please share some light?
Thanks

saltedfish said:
before brick, it had being prompted for a while to upgrade the system software, I always tab later to postpone it. but yesterday accidentally hit the "upgrade now" then it was bricked after the phone was rebooted.
the screen stayed at the huawei logo and powered by Android at the bottom. I am able to push/hold the power button to power it off, but not able to power it up by any buttons or combination. it will automatically turn on (randomly) and stayed at the huawei logo for ever.
when the phone is on at the Huawei logo, connecting it to PC but either "adb devices -l" or "fastboot devices" shows nothing, no devices.
could anyone please share some light?
Thanks
Click to expand...
Click to collapse
Did you ever unlock bootloader? Could you enter fastboot mode? (hold volume - and power button). Or eRecovery (plug usb cable, hold volume + and power, until Huawei logo appear, release power button)?

gazavn said:
Did you ever unlock bootloader? Could you enter fastboot mode? (hold volume - and power button). Or eRecovery (plug usb cable, hold volume + and power, until Huawei logo appear, release power button)?
Click to expand...
Click to collapse
unfortunately, I didn't unlock bootloader, so I can't enter fastboot mode actually. as I mention in the original post, I can only power it off when it's at the Huawei logo, but not able to power it on with any combination, it will randomly power itself on.

You have a corrupted /data partition, happened to me one day, on another huawei device (p9lite). You should, I said should, be able to reboot to huawei e-recovery, using power+volume up, release power after huawei logo shows up. Unfortunately you have to arm yourself with lot of patience and try to use an "unbrick guide" from another device. I'll try to find any info I can for you, but in the mean time you should look as well.
PS:/ I didn't even tried to install anything custom on this mate9, since it;s an expensive phone for me and I cannot afford to brick it up.