My DSi i guess just decided to "unmod" itself
So, yesterday I spent the whole day modding my friends DSi and making sure it was perfect and had no glitches so, after finishing modding I turned it on and it went right into Twilight Menu, i checked everything and there seemed nothing wrong with it, so i turned it off and the next day i gave it to her but a while later she comes over to me and tells me that when the DSi was turned on it just went to the default unmoded menu, i thought it was weird because it was perfectly fine yesterday so i went home and did the usual turning it on and off, taking in and out the SD card. BUT when i pressed A and B at the start to start Unlauch and see if anything was wrong with that, it just didnt lauch as if Unlauch installed. I gen dont know what went wrong, it was perfectly fine yesterday i checked multiple times, and im CERTAIN i followed all the insturctions aftere all it wasnt my first time modding a DSi. Im going to put the SD card into my pc and see if the files got deleted or something, but honestly i dont know what im doing wrong. Has this happened to any of you before??