I just updated both of my systems to 2.4 I deactivated streetpass for everything but streetpass mii plaza, rebooted. Both systems got tags, 8 on one and 5 on the other. Everything worked fine. Tomorrow night I'll start turning on streetpass for my games one at a time and check if any of them...
I turned on streetpass for the same 4 games on both my n3dsxl systems. One works fine and the other is crashing now. It wasn't before. It was the other system that was crashing before. I don't have time to look into it till tonight.
I had the same thing. I started turning off streetpass for each game that I don't check one at a time until it stopped crashing. It ended up being pokémon Rumble World.
I'm not sure if that's what the reason is. I never check animal crossing, Mario kart , or super Mario 3d. It was only pokémon rumble that affected the app. I forgot to mention that I had an orange light flashing with the crash. As far as it not registering a streetpass, it only happened once on...
I started investigating, and found that Pokémon Rumble World was the cause of my problems. As soon as I deactivated streetpass for that, everything started working again.
I didn't even get an error code. When I used the app, it uploaded, downloaded and crashed about one second later. I could see the option to exit, but it crashed too quick for me to hit it.
I have this on 2 systems, both n3dsxl. The other one works fine with the update. I guess I'll wait till the 10 hours are up and try again. I'll let you know what it does.
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I may try the new ram site, and download more RAM to my Switch. Not sure if ddr3 is the right ram
for it tho. Edit- no it uses floppy Ram, just like @AncientBoi