p9 lite vns-L31 won't start - just huawei logo visible - Huawei P9 Lite Questions & Answers

Hi.
Last night I copied the downgrade update.app on my huawei p9 lite and the installation went fine. after the update the phone is not starting again. When I turn it on the only thing that happens is that the red huawei logo is displayed and that's it. nothing else.
I copied another update.app on the sd card but I can't start the update process when I hold down volume +/- and power.
Any advice how to bring the phone back to life?
Thanks for your help.

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Hi there
I've just replaced the screen of my P8 lite. I booted, everything working fine in Lollipop. so i start downloading the update to 6.0 via the updater app.
it just casually installed the update, went to the screen with percentage of how far the update is at. It finished, 100% then decides to reboot and poof, only black screen, no boot up screen or all the other stuff. Just a plain Black LED Backlight.
I've tried downloading the 6.0 to 5.0 firmware on my sdcard in dload map. when i boot the phone by holding volume +, volume - and power button, it just boots back in the black screen, not starting the update.
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Hi!
Is a P8 Lite ALE-L21?
Try this to unbrick: https://forum.xda-developers.com/p8lite/help/fix-bootloop-freeze-logo-t3639688
.

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Hello everyone.
I own a Huawei P10 Lite WAS-LX1A (2017)
Recently I forgot my phone above my car.. Unfortunately it dropped down and it was all broken but the board was intact.
I bought a new LCD assembly, back cover, battery and the fingerprint sensor.
Phone is now rebuilded but I dont know why, the phone turns on in "Huawei eRecovery" mode. So I assume the phone is bricked due to high damage.
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