Hello, I wanted to install sailfishOS but I need to downgrade to Android 11 first, does anyone have the file to flash? I did not find
CID TW (Taiwan)
You can follow the guide here.
You can download Emma flash tool here.
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That’s not a downgrade, that’s a reflash, and it should work.
It worx 
I’ve done it couple a days ago.
thank you, it worked