Nougat - Huawei P9 Lite Questions & Answers

Im currently on stock android marshmallow and I just got nougat update.Im currently rooted with bootloader and twrp installed.Do I have to relock the bootloader or just unroot?

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Custom ROM on unlocked M

Hi, I have a ZE550ML with official 6.0, its bootloader has been unlocked and have TWRP 3.0 installed (NOT temporary). Can I flash custom ROM in this state or I have to downgrade to 5.0?

Can I safely flash back to stock Marshmallow?

My Moto G4 came with Marshmallow installed and I performed an OTA update to Nougat. I then unlocked my bootloader and flashed some custom Nougat ROMs (7.1.2, so newer than the newest official available version). Now I want to get back to stock Nougat so I can relock the bootloader and all that jazz.
As far as I can tell, only Marshmallow firmware images are available so can I safely flash that (I'm thinking "ATHENE_MPJ24.139-23.4_cid50_subsidy-DEFAULT_CFC.zip") and then OTA to Nougat from there or will that cause problems because I already (presumably) have the Nougat bootloader version? I don't want to brick my phone!
Note I'm using a retail United Kingdom XT1622 Moto G4.
Cheers all in advance,
treela
Ah ha! Found this:
https://forum.xda-developers.com/mo...owngrade-nougat-to-marshmallow-t3487201/page5
Got back to stock Marshmallow all OK
flashing back to marshmallow and being able to relock the bootloader after doing the ota wont really work. best bet is to try and find the stock nougat image and flash it.

Downgrade to 5.1 lollipop

If i use twrp to flash device back from nougat to lollipop (stock), will be any chance in a future to install original updates (OTA?)
No!
How to do it? I have official Nougat. I've unlocked bootloader and installed twrp.
I've tried twrp, but can not find debloated flash rom. Some of guys are making downgrade with fastboot over youtube, but they downgrade back only previous version of android, for example from nougat to marshmallow, or from marchmallow to lollipop.
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What will happen, if i try with fastboot way? Will I brick the phone?

Update to oficial oreo from oficial nougat with rooted and bootloader unlocked

I have model WAS-LX1AC109B100 rooted, with twrp recovery installed.
How can I update to oficial oreo from the nougat official with the phone rooted and with the bootloader open?
Is it necessary to unroot and block the bootloader?
Thanks in advance
HWOTA.
With OTA way, P10 reboot in TWRP and upgrade doesn't work
https://forum.xda-developers.com/p10-lite/development/hwota-huawei-p10-lite-t3776186

Upgrading from Oreo stock rooted to Pie stock

I'm rooted with unlocked bootloaders. I've oreo stock and I'd like to upgrade to pie stock through an official firmware (released by LG). I wonder which is the correct sequence for not breaking the smartphone: do I have to lock the bootloaders again ? And what about the twrp now installed ? And what should I do to be rooted again ?
To be pointed to a guide would be fantastic!!!

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