Weird situation here. I am currently in the process of replacing my top screen so bear with me.
I was draining my battery as much as possible before I replaced it because it was kinda swollen, so I would turn it on, let itself turn off, and repeat. After doing this a few times (at the point where it could only boot the home menu for a second or two), I turned it on and got this.
So, I have done research on what a prefetch abort kernel panic is. It seems to be that it is some sort of near-fatal or fatal hardware issue that cfw detects, shutting down the console to protect it. It also seems that it is almost never an issue with the battery. (Important to note once again that I was draining the battery.)
But the odd thing is, after letting it sit for a couple hours, I turned it on again and lo and behold, it booted straight to the home menu (albeit for an extremely short period of time because... battery). After doing the whole turn on and let it drain process a few more times, I got the screen again. Waited for a couple more hours before turning it on again and it was fine.
After this I was extremely cautious when turning it on and did the process slowly and intentionally. After those couple of incidents, it seemed to be fine. My 2dsxl is currently under construction and waiting for a part so I can't test at the moment. I have saved a dump though.
Does anyone have any idea a) what caused this and b) if my console is actually in grave danger? This is my beloved console of 7 years and really want it to be okay.
Thanks for the help!