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i have P8 lite Dual Sim ALE-L21C185B160 how i can install marshmallow 6 on my phone

i have P8 lite Dual Sim ALE-L21C185B160 how i can install marshmallow 6 on my phone
my phone is bootloader unlocked
i have try the website method and did nt work it say cant upgrade
thanks for help

To unlock your bootloader register your imei(main imei) and sn here: https://emui.huawei.com/en/plugin.php?id=unlock&mod=detail
After that,enter phone in fastboot mode, enter fastboot and write this command: fastboot oem unlock yourcode

VladHD
thanks for reply but i have already done with this

And is not working?

http://huaweip8lite.blogspot.com/2016/04/tutorial-huawei-p8-liteale-l21.html
try from this link...

Help please.

Hello so I'm using Huawei P9 lite
VNS-L21
And after unlocking bootloader I receive this message when I'm rebooting it:
Your device has been unlocked and can't be trusted
How to get rid of it? Because I want to sell this phone..
I really don't know how to relock it so please anyone help me.
P.s I have been flashed TWRP via fastboot..

I'm afraid you can't, the only way is to relock the bootloader

Aviu said:
Hello so I'm using Huawei P9 lite
VNS-L21
And after unlocking bootloader I receive this message when I'm rebooting it:
Your device has been unlocked and can't be trusted
How to get rid of it? Because I want to sell this phone..
I really don't know how to relock it so please anyone help me.
P.s I have been flashed TWRP via fastboot..
Click to expand...
Click to collapse
Flash with Dload firmware official lower version you had.
Ex: vns-l21c432b160 + twrp
Dload l21c432b130
Bootloader locked more message.

volume - and power button when phone is off.
open cmd as fastboot and write : fastboot oem relock ;your code;

Fastboot & Rescue mode, Phone Unlocked

I think I bricked my huawei p8 lite.
I rooted my phone and try updating with zip file but this is what I got.
FASTBOOT & RESCUE MODE
Phone Unlocked
Please help me recover my phone.
Thanks
Stickie
Papua New Guinea

Huawei P8 Lite bootloader locks itself

Hi guys, I have a P8 lite here with a problem: it stays stuck on the huawei logo. So I'm trying to flash a new rom to solve the problem.
I went to the huawei website, obtained the oem code, then i proceed with
fastboot oem unlock CODE
output OKAY, the phone changes its status to UNLOCKED
then I
Fastboot reboot
and the bootloader it LOCKED again. Do you know why this happens? Could I try to flash twrp right after the OEM UNLOCK without rebooting?

TWRP cannot be installed

In Huawei p9 lite VNS-DL00 I wanted to change the location to the European one to upload Android 7. I unlocked the bootloader using the PotatoNV method. When trying to upload twrp via both SRK Toll and minimal adb and fastboot, the error "FAILED (remote: image verification error)" pops up. How to solve this problem?
Ps. could it be related to the lack of oem lock removal options in the developer options and the lack of fastboot frp on the screen (only phone unlocked)?

did you try this?
2021 Unlock BootLoader for Free
I did a lot of research, and the only way to unlock the BootLoader for free is to use PotatoNV software. Just wanted to let you guys know, so that you dont waste your time. :) Tested and it worked on P9 Lite and P20 Lite. If you need a guide, i...
forum.xda-developers.com