I have an LG MS690 2.2 froyo from metropcs. It will only let me update stock apps, and the rare App I've grabbed. I took my phone to metropcs they ran Diagnostics nd said no problem showed up the only option was,a factory reset. I've done several resets since then but havent been able to solve the issue. My error message is can't install to USB or SD card. :hmmmm2: any suggestions or insight greatly appreciated