My Micro SD suddenly couldn't be detected by my Blackberry 8320. I was listening to music and someone called when it stopped working. I can't format on the phone and it can't be detected even when connected to the Desktop Manager. I tried another Micro SD and the phone can't detect that either. But when I insert the Micro SDs into another phone, there's no problem. Help?

Have you tried a battery pul?

Yes. It didn't help.