sounds like the memory storage is failing on some sort of logging systems for these to be going down at the same time-ish (same number of logs per day written etc over cheap flash).
It is a conversation I have had with many a jr dev. 'ok you are logging this how much space is that going to take? how long do you want to keep it? what is your rotation schedule?'
I usually get the 'oh did not think of that' because logging is a serious afterthought in many cases. It is boring and you just drop in log4j and log away right?
Shame on this manufacturer.