downgrade 7t from 10 to 9 - OnePlus 7T Questions & Answers

Does anybody have the files to downgrade the 7t from Android 10 back down to Android 9?

je2854 said:
Does anybody have the files to downgrade the 7t from Android 10 back down to Android 9?
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The 7t had Android 10 from the start. There never was an Android 9 on this phone.

bdw why you want to downgrade?

dpryor88 said:
The 7t had Android 10 from the start. There never was an Android 9 on this phone.
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++
Since there is no android 9 stock rom for the phone, it is not possible

Related

Downgrade to Miui 9.5 (Oreo)

Can this device be downgraded to android oreo?
phroeix said:
Can this device be downgraded to android oreo?
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No no possible due to Xiaomi's Anti Rollback Protection.
can I downgrade to an android 8 custom rom?
The Redmi 7 ships with Pie and MIUI 10 out-of-the-box, so downgrading to Oreo is impossible.

how can i downgrade android 9 to 8?

i just bought an s9 with andoid 9.
how can i install custom rom which is for android 8?
thx a lot

Downgrade Android 10 To 9 To 8.1 ????

Can I go back from Android 10 to 9 or 8.1?
Now I am using Android 10 HAVOC ROM.
I want to get down from android 9 or 8.
Can I flash ROM to Andoid 9 or 8?

Question Disable dm-verity

As we know there is no working twrp for android 11 yet. Therefore it is difficult to disable dmverity right now. Has anyone found any way to do this on oneplus 9 pro?
There is an unofficial one for my previous phone realme x2 pro. I was using LineageOS 18.1 / Android 11 on it.
clavelm80 said:
There is an unofficial one for my previous phone realme x2 pro. I was using LineageOS 18.1 / Android 11 on it.
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But did you manage to use it for oneplus 9 pro?
HubertGT said:
But did you manage to use it for oneplus 9 pro?
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Sorry, I understood you were saying there was no TWRP for any Android 11 devices.
I did not look for TWRP for the op9pro as I sure it will be on this forum first.

Nokia 8.1 TA-1119 How to Downgrade from Android 11 to Android 9 pie.

I have nokia 8.1 TA-1119 and i want to downgrade from android 11 to android 9 pie. I am having issues on android 11 and seems to like android 9 pie more. Thanks

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