Here same problem to SanDisk Cruzer Edge 16GB write protected error
I tried solve this problem until now.
I tried many ways on XP, win 7, vista and Apple MAC.
Tried used Partition, format, Regedit, Low format, Unlock s/w and utility.
almost a week when i have time tried solve this problem.
i think i tried almost all when i got and found information from internet .
also i have 2 more SanDisk Cruzer Edge 16GB but working well
please help me
Thanks