4GB SD IS WRITE PROTECTED,what??

[HBOOT]

HI:
My 4GB SD won't let me formatt it since it got crazy when I tried to load some tomtom maps on it, it claims it is write-protected. I made sure it is physically unlocked,put tape on it,used pocket mechanic.....nothing worked yet. I tried the search feature here but nothing. Something gotta be done about that too...lol.
My mogul is able to see it and read it ok, it does execute the delete command and formatt like pocket mechanic but all comes right back. i am able to isolate one single file in "live search" that won't go away and seems to be the hold up..not sure,it is the 0m2t1
Thanks a lot.