My Blackberry Curve 9300 shuts down around 40% without any notification. I've replaced the battery and that didn't solve the issue, I've wiped & did a restore & that still didn't resolve the issue. So I replaced the phone and that didn't even resolve my issue. I also deleted every 3rd party app but that didn't seem to be the problem. So I contacted T-Mobile and they told me it's probably the software. I tried reloading the software yesturday with the application loader then restoring everything after but it still shut down. Am i supposed to delete some vendor file or something? Or should i just downgrade back to OS 5? Because this didn't seem to happen when i was using OS 5. Maybe I'm doing something wrong when i reload/update the software?