My Acekard 2.1 used to work fine on AKAIO 1.8.7, but I updated it to 1.8.8 and now it just freezes at "Processing....do not power off!" I don't know what info to give so just ask for it
Maybe format micro SD chip and re try. If not then go back to the firmware AKAIO 1.8.7 that worked. I hope you keep backups of your games and save befor doing so.