Question how to downgrade oxygen os 12 to oxygen os 11 with tmobile version?? - OnePlus 9

Hello, I updated my one plus 9 to oxygen os 12 to test it and it seemed very bad to me as dowgrade to oxygen os 11 I have the tmobile version, can I change to global rom to downgrade it?

Just did this.
Have to use the T-Mo MSM. Using Global detected it as T-Mo and it refused to work.
After that, you can convert it to Global using the modified MSM and then apply 11.2.10.10 as normal.

Hi can anyone please share the links for downloading TMobile msm tool and also for the os 11.2.10.10
My mobile variant le2127

Related

What Stock Rom Should I Flash? Chinese GM1910

I Purchased (Imported) a OP7 Pro 8GB/256GB. I will be receiving the device tomorrow and wish to install OOS. It's coming preinstalled with Hydrogen I believe. Basically what rom should I install?
US? UK/EU?
I live in Australia. If I go on the Australian website I am able to download firmware:
9.5.7.GM21BA 11th June 2019.
If there are any Australians with a OP7 Pro message me.
Really all up to you. If you are farmiliar with flashing and okay with dealing with some bugs at the moment, try any of the AOSP roms. Havoc has most issues fixed; i haven't tried aosip yet. If you don't want to deal with bugs, just stick with OOS for a little bit until the AOSP ones can get everything situated.
Global or EU
Global or EU of fine.
Titokhan said:
GM1910 is the Chinese variant OnePlus 7 Pro running HydrogenOS (with GM21 build tag).
It is possible to flash both GM21AA (global) and GM21BA (EU) OxygenOS firmware on top of the HydrogenOS using the Local Upgrade method.
Bootloader unlocking is not necessary for switching to OxygenOS.
After conversion, you'll get OTA update from the respective branch.
Click to expand...
Click to collapse

Which OS Build should I flash if I have a Sprint variant GM1925?

Good day everyone,
A couple of months ago I got my hands on a OnePlus 7 Pro 5G Sprint variant and one thing I don't like is that updates from the carrier are too slow, so I want to flash another Oxygen OS Build that can receive update directly from One Plus, I already unlock the bootloader using this guide: [BOOTLOADER UNLOCK] Sprint OnePlus 7 Pro 5G, also I use this guide to flash TWRP: [Guide] [Android 9/10] [7/7Pro] Unlock, TWRP, Root, and Update, and I know that the Oxygen OS Builds are here: [OnePlus 7 Pro (5G)][ROM][OTA][Oxygen OS] Repo of Oxygen OS Builds.
So, my question is: which OS Build should I use to change the Sprint OS variant to an international version from One Plus? I read on that page that for the Sprint variant GM1925 the GM25CC packages are the ones intended to be used but they are no longer supported, can I use the GM21AA variant for this even though my One Plus is not a double sim one?
Thanks for the help
Updates for OnePlus 7 Pro 5G phones are really slow due to the 5G modem. At best, you can debrand your Sprint phone to make it using the EU 5G ROM by following the guide here.
And, sad but true, you can't use any of the GM21AA, GM21BA ROMs.
alive.dew said:
Updates for OnePlus 7 Pro 5G phones are really slow due to the 5G modem. At best, you can debrand your Sprint phone to make it using the EU 5G ROM by following the guide here.
And, sad but true, you can't use any of the GM21AA, GM21BA ROMs.
Click to expand...
Click to collapse
Thanks for the help, my only concern by debranding it would be that if the EU 5G variant would affect the 3g, 4g or 5g bands supported by my current carrier

Question Funtouch on China version

Did anyone know if it's possible to flash firmware from Indian Iqoo7 Legend on the China Iqoo7 running on origin os?
Seconded, i bought iqoo7 with origin rom, want to be able to flash to funtouch os.
I've tried using rom from iqoo7 legend in android 12 website, it has error when detecting hardware/software when i run in in recovery mode.
I would also be very grateful if someone could solve the fact that the global funtouch os could be installed on the Chinese version as well.For such a great phone, is there really no developer who can solve it?
You can try 1.73.0 from iqoo 7 website..it is whole file of 3.68 gb not too up update...i think you should be able to update to Indian variant, if not then may be bootloader needs to be unkocked

Anyone with a GM1917 installed the Android 12 OB1?

Hi everyone,
Oneplus released a beta for android 12 but only for the Indian variant of the phone. Oxygen Updater is behaving as if it is compatible with my phone. I have the global variant. Has anyone installed it? Did it cause any issues?
Thanks
Elias
Up

Stable Android 11 - OP 7 Pro (GM1915)

Hi All,
I have a OnePlus 7 Pro GM1915 that I converted from T-mobile to Global. I came from a OnePlus 6T and it had the official Android 11, the problem is I updated using OTA updates and then using the Oxygen Updater but the Android 11 was extremely buggy.
The screen would zoom in and wouldn't work until I restarted my phone. I am starting to regret my decision of going on the OnePlus 7 Pro.
Can someone please help me find a stable Android 11 where everything works?
The GM1917 version has the Oxygen OS11.GM21AA that has none of the issues. Is there anyway I can have that flashed.
I don't want to root my phone because then some of my banking apps don't work.

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