Hello this Threads have Firmware for Miatool Redmi Note 9 Pro. You must first upgrade to Android 10 before Ubuntu Touch can be installed. V12.0.2.0 definitely works for the device. https://forums.ubports.com/topic/9611/redmi-note-9s-can-t-make-calls-even-going-back-to-stock?_=1715421919317&lang=de