I was trying to put some musics in the sd card but it says WRITE-PROTECTED .
So I tried to format the card and it says that again!
How can I put the file in the sd card?
How can I remove the write protected?
Help me!!

Most sd cards have a small slider on the side that write protects them try sliding it into the other position and re try.
If it still shows write protected you may have a defective card

Move your switch to the SAME position as here: