Ouch, failure in safe mode is a bad sign and unfortunately there is no test in the boot prom to really test the hardware, a bug caused by Android 12 corruption during the update is still a possible cause.
You can try to reset with Android firmware 12 to 11
The 2 vibrations must be an indicator of the type of failure, ASUS engineers should be able to answer, at worst make you activate a log to analyze it.
Wait until Monday and relaunch the moderators.