Question Firmware in both slots - OnePlus 9

Hi I'm about to install a custom rom. I have OOS 12 C48 on my oneplus 9 device. How do I check if the firmware is in both slots A and B? I have seen that this is a prerequisite for flashing the rom.

Up, anyone?

Once you have the phone back to full stock with twrp. Flash this https://androidfilehost.com/?fid=4349826312261636295. It will copy current slot to other slot. This will only work on oos 11.

Do we just adb sideload this zip? To copy latest firmware to both slots

with crDroid, we have firmware update tool
check it out (firmware button)
crDroid.net - Download crDroid v8 for OnePlus 9 Pro (lemonadep)
official crDroid v8 for OnePlus 9 Pro (lemonadep)
crdroid.net

gwolfu said:
with crDroid, we have firmware update tool
check it out (firmware button)
crDroid.net - Download crDroid v8 for OnePlus 9 Pro (lemonadep)
official crDroid v8 for OnePlus 9 Pro (lemonadep)
crdroid.net
Click to expand...
Click to collapse
Is there a version fo OP 9…?

aniketlovesmusic said:
Do we just adb sideload this zip? To copy latest firmware to both slots
Click to expand...
Click to collapse
Yes.

jmadiaga said:
Is there a version fo OP 9…?
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ahh sorry
linked lemonadep
here -> https://crdroid.net/lemonade/8

gwolfu said:
ahh sorry
linked lemonadep
here -> https://crdroid.net/lemonade/8
Click to expand...
Click to collapse
thank you!

Related

Official twrp for redmi note 6 pro?

is there any official twrp for redmi note 6 pro yet?
no
the unofficial one is useless for me !
The unofficial is totally usable. I have been flashing pixel experience and a few other roms without any problem.
with stock rom twrp is not permanent,
waiting for eu rom of RN6
Any news when will Redmi Note 6 Pro receive Official TWRP?
Regards,
Has anyone been able to flash Pie GSI's?
the new twrp from sayad1 is ok now !
everyone, I found that night light twrp works with me but after install using pc, you have to wipe factory reset and flash adb.zip (or smthin in post) to get permanently twrp + internal storage access. you can find night light twrp from redmi note 6 pro forum
g070140 said:
The unofficial is totally usable. I have been flashing pixel experience and a few other roms without any problem.
Click to expand...
Click to collapse
tell me where I find this roms
ROGGGER3G said:
tell me where I find this roms
Click to expand...
Click to collapse
Google "GSI list", there is a list of roms you can flash. I am using pixel experience 8.1 at this moment. PS: you need to flash magisk or you will get bootloop.
ROGGGER3G said:
tell me where I find this roms
Click to expand...
Click to collapse
https://forum.xda-developers.com/re...overy-pitchblack-recovery-unofficial-t3868240
here

Openkirins RROS 8.0

Does it work with european carriers and does it work with magisk?
Sammy4798 said:
Does it work with european carriers and does it work with magisk?
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Click to collapse
Yes and Yes, but you have to rebrand your phone to chinese or indian variant and upgrade to Oreo Emui before flash the RR version.
spiritwashere said:
Yes and Yes, but you have to rebrand your phone to chinese or indian variant and upgrade to Oreo Emui before flash the RR version.
Click to expand...
Click to collapse
i know i must rebrand but if i do andi wantto go back is that still possible and how
Can i flash this gsi on my honor 6x?
https://forum.xda-developers.com/pr...0-resurrection-remix-v7-0-arm64-32-b-t3891636
Sammy4798 said:
Can i flash this gsi on my honor 6x?
https://forum.xda-developers.com/pr...0-resurrection-remix-v7-0-arm64-32-b-t3891636
Click to expand...
Click to collapse
There are guides to rollback to N but the procedure has some risk. I'm on RR OREO and the system is very stable and the performances are really good.
About the RR pie rom, I don't know. Previously I tried the OmniROM Pie Alpha 5.2 (openkirin) without problems.

lineageos 16 official oppo f1f

I saw with surprise that official lineageos had official noghtfly d'or pour device but i trier to flash ans ençountered. An error 7 should.i install a new twrp version ?
Mchasard said:
I saw with surprise that official lineageos had official noghtfly d'or pour device but i trier to flash ans ençountered. An error 7 should.i install a new twrp version ?
Click to expand...
Click to collapse
I answer to me ...in effect changing to a newer version allow me to pass error 7 but the ROM doesn't boot
I returned now to spectrum project and I can't be no more install twrp....

Rollback from A11 to A10?

Hello.
I'd like to downgrade from A11 to A10 - anyone knows the link (downgrade zip with final A10 build)? I'm on eu stable.
Kind regards,
Mark
HAL6000 said:
Hello.
I'd like to downgrade from A11 to A10 - anyone knows the link (downgrade zip with final A10 build)? I'm on eu stable.
Kind regards,
Mark
Click to expand...
Click to collapse
Here it is:
New OxygenOS updates for the OnePlus 7 & 7 Pro bring November 2020 security patches
OnePlus is rolling out OxygenOS 10.3.7 for the Global/Indian OnePlus 7 and 7 Pro, and OxygenOS 10.0.10 for European OnePlus 7 and 7 Pro.
www.xda-developers.com
If you can't flash A10 over A11 you have to rollback to Android Pie OxygenOS 9 and then update to OxygenOS 10 stable through OTA local update, don't forget to make a backup because it will wipe all of your data.
Here is the link:
OnePlus Community
Introducing our new OnePlus Community experience, with a completely revamped structure, built from the ground-up.
forums.oneplus.com

Reccomended twrp for Poco X2 (Android 12)????

Hello, I am using Redmi K30 (4g) with Xiaomi.eu Rom 13 and unable to install TWRP. Tried Official & OrangeFox TWRPs, but getting black screen once boot into it. Kindly help and suggesst TWRP. Regards & thanks in advance​
Click to expand...
Click to collapse
there is an updated version of twrp posted on poco x2 recovery channel on telegram that one is working fine on miui 13 or you can install the pe recovery latest version for poco x2.
below is the pe recovery for android 12
Is it suitable for k30?
raymondusi said:
below is the pe recovery for android 12
Click to expand...
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