[P8lite Q&A, Help & Troubleshooting] eksdi:
Hello,

I have a Huawei P8 Lite (ALE-L21) phone with this error: FUNC 8 : HIFI Image, Error 1 Security Verify failed. I think I have tried everything to fix it but had no success, hence why I have decided to create this thread.

As you can figure out, the phone does not turn on, it only shows the huawei logo and shuts down. When pressing VOLUME UP + DOWN and POWER button, it used to show the HIFI image error screen, however when I press the key combination now, it only shows a red screen and turns off. I am able to enter fastboot and rescue mode by holding down the VOLUME DOWN button and plugging in a USB cable to the phone from a computer. Apart from that, I can't do anything else with the phone. (I do not have any software related to the phone installed (HiSuite), no backups, no nothing because the phone actually isn't mine and I have never actually played with it and androids in general.)

There are some similar threads and videos here:

https://xdaforums.com/p8lite/help/stuck-rescue-mode-fastbootrescue-mode-t3648105

https://xdaforums.com/p8lite/help/stuck-rescue-mode-screen-please-help-t3244872

https://xdaforums.com/mate-10/how-to/how-to-huawei-mate-10-pro-standard-t3709535

https://xdaforums.com/honor-5c/help/writing-recovery-failed-remote-command-t3584208

https://xdaforums.com/p8lite/help/huawei-p8-blinks-red-green-green-red-t3546038

https://youtu.be/UYmDBD7t1iM

I have tried a lot of things to make the phone work again but nothing worked.

Recovery mode using HiSuite - "Your device is not supported for system recovery"

I have tried flashing different ROM's using fastboot - when I try flashing it says "FAILED - command not allowed", which I assume is beacuse the bootloader is locked?

installing a ROM using a SD card (Force update or something) - the red screen shows and the phone shuts down

Huawei Update Extractor - updating specific files e.g. boot.img, still not allowed to flash

TWRP - the same error ( not allowed )

Rollback to the previous versions using fastboot - not allowed

At some point I was able to wipe the cache on the phone, not sure if that matters anyhow.

When I am in the fastboot & rescue mode, there is a text in green saying "Phone LOCKED", which I assume means that the bootloader is locked? So, I was trying to get the bootloader unlocked, however found no success. I have also tried emailing Huawei support to get the bootloader code, however as you may know, they did not want to provide the code.

I was able to extract some information from the phone though, using these commands: https://xdaforums.com/showpost.php?p=70483520&postcount=2

To get the bootloader code I have tried:

dc-unlocker - I think you need a working phone and have usb drivers installed for this to work and also I think you have to pay for this service

Kingroot + fastboot - https://xdaforums.com/p8lite/general/alternative-method-unlocking-bootloader-t3799294

Emailing Huawei support for the code - they don't want to provide one

https://xdaforums.com/huawei-p8/help/bootloader-unlock-unlock-code-huawei-t3792987

Does anyone have any suggestions on how to resolve the problem, or is it unsolvable? I would prefer to do it myself and not send the phone to Huawei or whoever as I would like to spend the least money possible. Also the warranty is long gone, since the phone has been bought in 2015.

Cheers