Question - How do I re-flash the China version of OP9RT from OxygenOS to ColorOS...
source link: https://forum.xda-developers.com/t/how-do-i-re-flash-the-china-version-of-op9rt-from-oxygenos-to-coloros.4540903/#post-88004417
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Question How do I re-flash the China version of OP9RT from OxygenOS to ColorOS?
If there is such a forum, I would appreciate it if you could paste it in your reply.
I am Japanese and use some English and translation tools, so my English may be strange.
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What oxygenOs version are you using? A12 or A13?
I'm using OOS 13.
I'm using OOS 13.
My phone comes with COS13, but I changed it to OOS13. Then I downgraded to OOS12. I have seen an article about changing OOS12 to COS12, maybe you can do that then update to COS13. But backup your data before doing any move.
OnePlus Community
My phone comes with COS13, but I changed it to OOS13. Then I downgraded to OOS12. I have seen an article about changing OOS12 to COS12, maybe you can do that then update to COS13. But backup your data before doing any move.OnePlus Community
Introducing our new OnePlus Community experience, with a completely revamped structure, built from the ground-up.community.oneplus.com
How did you downgrade to OOS12?
How did you downgrade to OOS12?
OnePlus Community
OnePlus Community
Introducing our new OnePlus Community experience, with a completely revamped structure, built from the ground-up.
Are there any caveats, such as not being able to downgrade the rollback ROM via local OTA? Also, does developer options enabled or disabled affect whether downgrading via OTA is possible or not?
Are there any caveats, such as not being able to downgrade the rollback ROM via local OTA? Also, does developer options enabled or disabled affect whether downgrading via OTA is possible or not?
I asked this question because I got a warning that I could not downgrade when I tried to change the China version of OP7T from OOS12 to OOS10.
Are there any caveats, such as not being able to downgrade the rollback ROM via local OTA? Also, does developer options enabled or disabled affect whether downgrading via OTA is possible or not?
you have to use roll-back firmware to downgrade. After that, the phone just look like new one, you have to setup everything.
Right now I am back to A11 for testing. Again flash back to OOS13.
I asked this question because I got a warning that I could not downgrade when I tried to change the China version of OP7T from OOS12 to OOS10
only oos12 to oos11, then oos11 to oos10
only oos12 to oos11, then oos11 to oos10
Thanks for everything. I'll try to do more tomorrow, so I'd appreciate it if you could give me some advice.
My phone comes with COS13, but I changed it to OOS13. Then I downgraded to OOS12. I have seen an article about changing OOS12 to COS12, maybe you can do that then update to COS13. But backup your data before doing any move.OnePlus Community
Introducing our new OnePlus Community experience, with a completely revamped structure, built from the ground-up.
Hello, how do you flash to OOS13 ? I am also at COS13 now, but I dont see any OOS13 rom to be flashed. And may I know why do you flash back from OOS 13 to COS 13? I saw the link you attached above is for oneplus 9r, not 9rt, is both phone's ROM compatible?
Hello, how do you flash to OOS13 ? I am also at COS13 now, but I dont see any OOS13 rom to be flashed. And may I know why do you flash back from OOS 13 to COS 13? I saw the link you attached above is for oneplus 9r, not 9rt, is both phone's ROM compatible?
I unlocked the bootloader, then flashed 9RT OOS13 flastboot ROM.
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