@migue5862 hi, I went though more or less this same process. Unfortunately I don't know if there is a good solution to the IMEI issue. but I stopped looking into it because I did finally find the solution for the UT update (the device is actively supported and 16.04 OTA-25 and 20.04 dev are available). There are just an unfortunate pairing of bugs that causes it to be a real pain to setup the device. I added my best shot at documenting the problem/solution on the issue on the begonia gitlab page As far as the IMEI goes, my suspicion is that the UB ports installer version for the note 8 uses android 9 to get around the adb issues that the note has in halium 10, and from the interwebs there seemed to be some indication that the android 9 formatting doesn't line up with the android 10 (or 11) firmware. If this is true there could be the chance that after getting the note updated to a current version of UT you may be able to re-install miui without IMEI issues.

@migue5862 Waydroid doesn't work with anything under Halium 9 (the abstraction layer that talks to the android bits of your phone) and given your error, my guess is you're stuck with anbox. Check your phone under settings/ about /os- in device version description u should see sth like that "userdebug-9.1.". If it's 5 or 7, anbox is the way, unless there's a halium-dev channel for your device that runs halium 9. Anbox is not supported anymore, but it's still able to run a few things. You better be command-line savvy though, because it's a pain to install, manage and uninstall.

@dpitti No problem. I just shared my reasoning as an instruction opportunity

@migue5862 Seems like it is a reporting error of some sort. The issue I have seen needed the logs to be phsically reset fromm the terminal so yours seems different to that. Good idea on keeping an eye on for now. If you feel this is down to the device we can move it. For now let's leave it where it is.