Yes, with Xiaomi there are also Linux terminal app and you can flash through adb/fastboot but i was talking about some obscure hardware like speedtrum cpus and others also obscure memory manufacturers when i ressurect usb flash drives or chinese ssd, i am using Xiaomi poco x3 pro 8/256 and Xiaomi redmi note 4 4/64 and alldocube iplay 30 pro 6/128 and ressurect second hand devices as hobby, when looking for rom reviews i check “channel48” this guy reviews new roms on old hardware