OS 4.5 for BlackBerrys now available ...
PLEASE READ the comments section if you do run into any problems as most questions are already answered. REMEMBER this needs to be installed through IE with the BlackBerry software on a comp NOT OTA with your Berry.
http://www.blackberrycool.com/2008/11/blackberry-os- ... »
Note: Although the 8350i WILL be shipping with OS 4.6, Sprint is releasing OS 4.5 for its current BB lineup NOT OS 4.6 (If I'm not mistaken, OS 4.6 requires different/newer hardware (eg. Bold, Pearl 8220, Curve 8900, etc.) to run and the current lineup's hardware cannot support OS 4.6.)
Sprint Daddy