Help!!

Im not sure if this is the right form but i need help. Ive got all my homebrew to work but now i have a problem. I plug in my sd to computer and then try to addfiles to it and says it is writes protected and wont let me change anything. I dont understand how this happened and how i can unprotect it ive rebooted many times still protected. If you need to know its not locked and its a 2 gig dane elec sd card never had this problem with it. Help please!!!

Nvm Homebrew rocks i tried everything to unprotect it and found out all i had to do was download a game off homebrew browser now its unprotected :) thanx.