Re: NEW XBOX BEST METHOD WITH NO BAN/FLAG
Well, the reason that your profile corrupts is that what happens when a console is banned. The secdata gets modded so that the profiles you use with it gets "corrupt" or basically disabled from using on not-banned consoles. Of course, reading the nand and cleaning the secdata will fix that up for you.
Basically, if this console you want to flash is clean right now, as in stock, and never has been modified then just update to the latest dash, take out the drive, flash it to LT+ and then verify all your games to make sure they are ap2.5 compliant.