How to upgrade / back to stock? - Mate 8 Q&A, Help & Troubleshooting

I have rooted NXT-AL10C00B129SP02 and installed twrp. I want to upgrade soft, so I think I need to go back to stock and then use OTA. But how can I do that? I can't restore to stock by dload because of twrp.

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How do I get back to stock from custom rom?

Hi
How do I get back to stock, from a custom rom?
I did a backup of stock, with TWRP, but can I just restore it or do I need to flash stock firmware with Odin first? (I'm on XtreStoLite right now).
Just don't want to brick it, so unsure if I can just restore, or I need to remove the custom rom before restoring.
Thanks in advance
Faspaiso said:
Hi
How do I get back to stock, from a custom rom?
I did a backup of stock, with TWRP, but can I just restore it or do I need to flash stock firmware with Odin first? (I'm on XtreStoLite right now).
Just don't want to brick it, so unsure if I can just restore, or I need to remove the custom rom before restoring.
Thanks in advance
Click to expand...
Click to collapse
If you want a clean install of stock I would use Odin.

[Q]update fails after unlocking

when i unlocked my xt1550, i made a twrp backup of unmodified stock rom. and today i restored it. i got 59mb update but it always fails (yes, i restored stock recovery.) any idea what should i do other than reflashing stock firmware?
You need to flash the latest stock firmware available for your device. That's the only solution in your case.

OTA Question

Unlocked U11 with unlocked bootloader, trwrp recovery and rooted stock. Have not flashed custom rom. Steps to take OTA Oreo?
Flash back to stock. Use the firmware zip it is on now to reset. You should then be able to take ota's. No need to unroot, relock etc.
Flash stock unrooted FW due twrp?
Sent from my HTC U11 using XDA Labs
Believe I have bricked my device. Flashed RUU using appropriate RUU exe from HTC. Intaller ran for @1hour with 0% process. Battery was at 93% and ran to under 30% halting process. Had to disconnect to recharge. Will call HTC to see if they can help.
Update- All cool. Battery died, charged phone boots up fine. Still on stock. Need to restore stock recovery.
shivadow said:
Flash back to stock. Use the firmware zip it is on now to reset. You should then be able to take ota's. No need to unroot, relock etc.
Click to expand...
Click to collapse
If I'm not mistaken, flashing back to stock with the ruu will in affect unroot your phone. You'd still have twrp and an unlocked bootloader, but you'd have to install SuperUser or Magisk again.
Am I correct?
cmurgia said:
If I'm not mistaken, flashing back to stock with the ruu will in affect unroot your phone. You'd still have twrp and an unlocked bootloader, but you'd have to install SuperUser or Magisk again.
Am I correct?
Click to expand...
Click to collapse
Flashing back to stock with the ruu will replace TWRP with stock recovery, thus making it able to take OTA.
If it's rooted or TWRP installed, it will stall at beginning of OTA process .
michaelbsheldon said:
Flashing back to stock with the ruu will replace TWRP with stock recovery, thus making it able to take OTA.
If it's rooted or TWRP installed, it will stall at beginning of OTA process .
Click to expand...
Click to collapse
What if you just remove twrp and go back to the stock recovery? Would it then break root?
cmurgia said:
What if you just remove twrp and go back to the stock recovery? Would it then break root?
Click to expand...
Click to collapse
You could remove root of SuperSU or Magisk and then flash stock recovery over TWRP.
Haven't tried that and not sure if it would work. A rooted phone won't take OTA.
Would save restore chores if you could.
michaelbsheldon said:
You could remove root of SuperSU or Magisk and then flash stock recovery over TWRP.
Haven't tried that and not sure if it would work. A rooted phone won't take OTA.
Would save restore chores if you could.
Click to expand...
Click to collapse
only way to take OTA is go back to stock rom by using RUU (will lost data, back to stock recovery, unroot already).
On rooted stock rom, i tried unroot and flash stock recovery by ADB but it still cant install OTA update
Flashing back to stock will unroot and flash stock recovery. If you dont do it that way you cannot update ota as the signature of the firmware is broken. You have to 're-sign' the firmware by flashing it again.
Flashing stock firmware will NOT relock or lock the bootloader. It will NOT s-on. If your bootloader is unlocked and/or s-off do not change them as there is no need.
3 essentials for the m9 are:
Stock firmware ruu.zip
S-off
Charger cable.

Installing system update with TWRP

So I decided to update my phone ot the latest version, but since I have TWRP installed when I downloading the update it reboots to TWRP, thinks for a second and then goes to the main menu. Never does the install. Anyway I can go about installing it or do I need to install the stock recovery? If so does anyone have a link to the stock recovery.
You need to be stock (not rooted) to take updates. You'll have to flash the phone back to the original firmware, take the updates and then decide if you're going to reroot. BTW just unroot in will not trick the system. You need to have an untouched system partition. If you unroot you'll still have a marked system. Only ruu can undo it.
If you are s-off or unlocked bootloader then don't change them. It's not necessary. If you have manually locked or relocked your bootloader I recommend unlocking it before you flash the firmware to avoid any problems later on.
Find the ruu in zip format and go from there.

T-Mobile version flash stock?

I screwed up my stock rom somehow and need to reflash to get it back to stock. I was on the latest update. Anyone know what is the best method to get back?

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