Hi,
trying to find a way to securely erase free space _ is there anyway to get Shredroid or other to work on kindle fird hd 7 (unrooted as I havemanaged to do everything I want without so far) ·It will load but stops working as soon as its starts. It seems ridiculous to have to factory reset and even that woukdn,t necessarily wipe the entire hd,

Cheers,
Gray