This is no MTC* update.Here is an Android 10 to android 12 update for Belsee PX5 rk3368
I cannot get it to work on mine. When it gets to patching oem image it fails. I suspect my system does not have oem image or its looking for theirs. I removed the 3 oem patch files then I get a footer error message then update aborted.
Maybe someone with more knowledge about unpacking and repacking this update can get it to work on our system..
IF you do and can provide a link to the moded file.
PX5 RK3368 Belsee Android 10 to 12 download link.
Depending on the naming this update is supposed to be used on CSN2 or CSM4 units.