@György-Farkas thanks for the info. i'm not running that version firmware yet, but it got me to thinking about compression software. i know very little about what the max compression available with these compression tools but curious to know how large an uncompressed folder and all files and sub folders can be that would become a 500KB compressed file that would then be stored in mtd7 as a sort of backup. any idea if it would be an original size of 1MB or perhaps larger? thanks.