Hello everyone.
I am delighted to finally find a ROM to release my Xiaomi Mi 9T Pro smartphone. However, I have a little problem LOL!
So :
- Image flash OK https://twrp.me/xiaomi/xiaomimi9tpro.html
- Reboot on TWRP
- Wipe OK following this tutorial [HOWTO] install /e/ on a Samsung device from a GNU/Linux PC successfully
- Advanced wipe OK
- Advanced : ADB Sideload, both boxes checked then Swipe to start sideload. On Linux, I do well
adb sideload e-0.14-q-20201224-UNOFFICIAL-raphael.zip
BUT
ERROR 
Updater process ended with error: 7
This package required firmware from an Android 10 based MIUI build. Please upgrade firmware and retry!
I have read some feedbacks about this, including this one :
- Your TWRP version isn’t compatible with the ROM you are trying to install
What I have already tried :
- Redo the manipulation 3x
- Download an older image: twrp-3.3.1-0-raphael.img instead of twrp-3.6.1_9-0-raphael.img
- Change the name of the zip e-0.14-q-20201224-UNOFFICIAL-raphael.zip to filename.zip
Nothing happens, I still have the same error 7 for Android 10. Any idea?
Thanks for the help
UPDATE: I can’t even answer in public or PM because I’m a newbie on this forum. If a moderator can unblock me… The concern for me, aside from not being able to free my phone, is that I need it by tonight. Currently, I’m at someone’s house to have their Internet connection but as of tomorrow morning, I’m going back home with no connection except via the phone, and it’s not working anymore.
So I’m thinking of trying to reinstall the default system, see if the Android version is 10 or 11 and, if the former, try again or, if the latter, wait for it to settle down and release it later.
By the way, how do I reinstall the default OS version?