TL;DR: instinct switch freezes mid game, or black screens after Atmosphere logo, after working fine for weeks. Related error code: 2105-0602. Error happening on Latest public atmosphere version, as well as previous version before he updated Atmos.
Friends new Instinct modded OLED was working fine for a couple weeks. (Was setup with a donated 256 gb SD card I previously used in my switch for about a year, before upgrading to 512gb).
So now when he's playing games like Zelda, Mario kart, etc and the games will freeze up mid game, title screen, anywhere. Sometimes he has to hold power for 15 seconds and when it reboots, usually gets to atmosphere logo and then endless black screen when the Nintendo logo is expected. Sometimes after a few reboots, he will eventually get back into the switch home screen.
He has once or twice gotten this atmosphere error before the freezes became daily:
https://i.postimg.cc/ZK5gVR71/Screenshot-20230606-200305-Messages.jpg
Hoping this just indicates an SD card problem, Rather than something wrong with the chip or the switch, (Or emummc?) but have found hardly any info on that error code.
He has tried replacing atmosphere/Hekate/fusee files with the latest using rentry guide, and didn't really change anything. He hasn't messed w themes or homebrew apps.
I told him in the meantime to get a new SD card and set it up to test and see if he can get it to consistently boot into atmosphere, and then copy the old data to the new card as it's in file format. Any suggestions what might be the issue cause? Thanks all!