OMG! Official OS 4.5.0.81 for 8300, 8310, & 8320, 4.5.0.77 for 8330!

Official downloads are for Vodafone & Cellular South but work fine if you delete the vendor.xml file. (If you don't know how to do it, any blackberry forums has instructions.)
Download Link for 8300,8310, & 8320Download Link for 8330