Why go crazy with track / sector / byte / nibble when 
Fast Backup of Locksmith 6.0 can do the trick?

OK I know this strictly speacking isn't a crack but who cares!!!

Seriously: my goal is to take .nib image and bring them to .dsk format
so that it is possible for anyone to download and transfer them on a REAL
floppy and have fun with a REAL Apple II.

So if for once there are no details of the protection and how to bypass it,
forgive me. There are other "pirates" much better than me in the
analysis and in the writing of this things (not to mention the use of the
English language)