so my zephyr isn't glitching

I wrote the original nand back and luckily it still works... I googled a bit and it seems zephyr are trouble some to glitch.. so now I moved on to my jasper to glitch.. when I read the nand it says 0000023010 so its an 16 mb .. I dumped a few times.. and now the last time I am dumping it with the -r256 mb and its still reading already 20 minutes.. so this is strange.. now I am confused.. the dashboard also does not show any memory storage.. so this must be 16 mb jasper right ?