If you truly can't format it or read it when it's plugged into your phone, find a way to get the micro SD card into your computer (e.g., insert it in the SD carrier, then plug it into a card reader). Use Windows to format it (right-click on the drive letter, then select Format...) as FAT (not FAT32 or NTFS). Then open the drive and create a folder named
BlackBerry. Open that folder and create 5 folders named
music,
pictures,
ringtones,
videos, and
voicenotes.
It might also be good to drop a few MP3 songs into the
music folder and a few JPG pix in the
pictures folder.
Put the micro SD card back in your phone and see if it can find the card and see the songs and pix.
For more helpful info, please visit my
BlackBerry 8130 blog.