Yeah, I’ve had it fail pretty shortly after reformatting. It’s a bit discouraging, but keep trying it. Eventually, one of the reformats will stick and you won’t have to do it as often. A few more notes:
- It’s been suggested that using a more expensive (i.e. reliable brand) will eliminate the problem. I’ve found this not to be the case. Even the name brand cards have the issue now and then.
- I didn’t have this problem personally until I switched to LAN mode. I found that peculiar. So, I switched back and while I was able to use the microSD for a while longer, it eventually failed again and I had to reformat. So, I went back to LAN mode.
- My opinion is that Bambu has a flaw in the way they format (or reformat) that leads to a sort of internal file corruption on the card. So, I don’t think it has anything to do with brand or LAN mode. It’s a Bambulabs software issue that they haven’t openly recognized or addressed.
All that to say, I don’t think it’s you or your printer specifically. I think it’s an inherent bug that we have to deal with unless they final come around to addressing it. Furthermore, if it’s at all hardware related (like a cheap PCB component), I would expect this never to be addressed.