I also turn off WiFi and other non essential stuff when looking for errors.
The -P unit we're talking about is more than 5 years old, but was unused for 2 years.
Always turn off any logging except of RAM logging from the getgo.
After (always incremental) update to 386.12_4 on 13. Jan tried out skynet the next day.
Don't remember encountering this error before.
The demise of uSD card was quite sudden, it was actually hot.
Was able to copy some stuff, but 17 items were unreadbale.
Meanwhile updated the tmobile unit to 386.12_4, still same effect, no connection and no pings via router itself here too!
https still works, even the chinese one.
Considering these now are two units which were working flawlessly (except during Asus' mysterious remote update), and now they can't even connect, could there be something else at play?
Ok, will factory the -P unit now.