Originally Posted by JSanders

This will load on ANY carrier's 8830 by following the instructions below.
This is only for the 8830 model (MEID based models)
From US Cellular

Software Name: BlackBerry Handheld Software v 4.5.0.205 (Multilanguage)

If, for some reason, you end up with a white screen with small icons and the number 507, simply connect to the PC again and run Loader.exe again and it should load the OS to the device.