Help! Update failed. Now I have Black screen with stripes - P8lite Q&A, Help & Troubleshooting

I wanted to update my mothers P8 lite, but somehow the update failed. it doesn't show the logo anymore when it boots. Now it shows a black screen with stripes, it even shows stripes when I boot to fastboot or even recovery. I wonder if something is wrong with the display driver. But the phone seems to work when its boots to the system. I can hear the volume sounds when I press the buttons, only the screen is still black with white stripes. I wonder if something is wrong with the display driver.
I tried to use the huaweiextractiontool and flash the individual img. files trough fastboot of different firmwares. Exept the the display the phone seems to work normally I can still boot into fastboot, and I hear the sound when booting. But its the still a black screen with stripes, and every frimware gives a different stripe pattern.
Any idea on how to fix this?
Greetings.

Problem solved
I solved the problem by flashing agian the last working firmware. And My mashing the volume buttons agian, it booted in recovery and the screen is restored agian.

Related

Not initializing dispaly after boot. Sleep/wake fixes that.

Need help/advice.
I flashed from stock rotos rom jme. I had problem with flashing. Things like windows not recognising tab in download mode. Several times failed flashing in midle of flash process. At the end I flashed succesfully. And things are working normaly. But when I switch off and then on. I get at&t logo and then black screen, i get sound from samsung logo but still black screen. Buttons on/off the backlight few times and still black screen. Then I press sleep then wake and i get straight the locking screen and all fine till next boot.
It looks like the boot part does not initialize the screen propely as its has a white line across when its black.
And in recovery i cant see what I am selecting.
Any ideas?
update:
sys73r pointed me to http://forum.xda-developers.com/showthread.php?t=899196. I will test that after I solve my unstable USB connection. As flasshing boot with usb problem smells like brick factory.
Sorry for bringing this again to top.
The fix was already posted.

[q] android bot then black screen with strobe light flashing

HI
I have managed to flash in flashmode the recovery file and other that was mention in other post successfully on windows 8
did Fastboot Reboot and phone rebotted to android bot with progress green bar under him then went to lit black screen with green strobe light that lights up and dims out .
I can use power plus volume down and then press power twice but this just shows android bot and goes to black screen again
I have flash uk open d802 kdz file but still fails at 49%.
I can not access recovery at all and don't seem to get back into fastboot mode.
any help would be great been stuck for days .
don't want to take it into the shop to be fixed if I can do it for free.
anybody got any good ideas would be great . I am new to all this and some times don't understand certain things .

S4 black screen everywhere

So this happened when I installed latest version of LOS14.1.
Basically happened to me 3 times, the screen won't turn on after I lock my phone, reboot doesn't help and there is no logo on boot. Black screen in recovery and download mode. I managed to enter download mode and installed stock firmware but the phone screen is still black.
When it first happened I managed to 'repair' the screen by pressing power button for some time. Second time it happened I got lucky again and screen turned on so I did factory reset. This time I can't do anything, I flashed the stock firmware and the screen is still black with blue LED on. I'm out of options and have no idea what to do, I am going to open my phone tomorrow to check if some cables loosened up.

S4 issues with recovery and screen

I have some issues with my s4 a few weeks ago it started
first i couldnt change my brightness right after that my boot animation disappear and now i cant enter my recovery i found that out because today i tryed to delete everything and install new in hope that the bugs will go away but then this
i think i can go in to the recovery but my screen does not show it but i am not shure about that.
also after i tryed to install 5.1.0 android to maybe get in recovery, (befor i had 4.4.4 installed because i have a weird input lag in 5.1.0) i noticed that the screen is flickering but only in 5.1.0 in 4.4.4 i never had this
what i already tryed: install I9515XXU1ANK2_I9515YXY1ANL2_I9515XXU1ANK2_HOME.tar and I9515XXU1BPK3_I9515YXY1BPK2_I9515XXU1BPK3_HOME.tar ,
adb reboot to recovery , tryed to change kernel with app but i think that didnt worked
installed twrp, cmw both didnt worked
please help me to fix my phone
Does the phone boot properly to the desktop after flashing the latest stock ROM?
yes it boots normal
btw little update i found out i can use my recovery my screen just dont show any thing
i found that out because everytime i was downgrading from 5.1.0 to 4.4.2 i had to do wipe data or it wont boot
i tryed to go in recovery and go 3 down (wipe data) and then 7 down (yes) just with youtube videos and it worked before the wipe my phone does not start on 4.4.2
that means that my recovery is working but screen just doesnt show it
it doesnt show anything but the white samsung logo, normal system, downloadmode
at any other time my display ist blank
as an example when i turn it on i see the white logo then screen turns blank i hear the bootup sound, after 15 sec screen goes black and when i press unlock i can normal use the phone
but why is it blank while booting and in recovery and also is a bit flickering when phone is turned on normal
Recovery works on stock lollipop?
yes recovery works but screen does not when i enter it
the screen is turned on but it only shows black
same thing when the phone boots up screen in turned on but only shows black untill the phone is booted then screen works but is flickring a tiny bit
i called in a repair shop they told me maybe the backlight control is broken???
because i also cant change my brightness its set to max and doesent get darker when i move the slider

P8 lite l21 black screen

Hello everyone,
Yesterday I got my hands on an old Huawei P8 lite, it was working fine but I intended to root it and play with it a lil bit. The phone was running android 6.0 and I needed to rollback to 5.0. I flashed the rollback ROM without any problem, but then I went to flash the B170 ROM and after it was done, the phone's screen won't show anything. I can see the backlight turning on, and the phone is responsive, since it vibrates whenever I try to turn it on (the boot sound also plays) and the LED turns on whenever it's charging. However, the screen shows nothing but black. The boot logo won't show either. I'm afraid the LCD screen was damaged, but the phone didn't really suffer any kind of physical damage... it happened right after flashing the B170 ROM.
Does anyone have any tips? I've tried to boot the phone either on recovery mode or fastboot, but the screen it's still black, so I can just assume it's booting on that mode even if it doesn't show anything.
Thanks in advance

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