Some Files Appeared they are like ~FOX.FOX~ the R4 works but it ocupies too much memory Can someone tell me what it is?
Why don't you try formating it? Copy all the files you use to your computer,format you Micro SD and then copy the files back to your R4 ; ]
probably your card got corrupted, it happens sometimes, back up whatever works on the card, and format it, as already mentioned
