Software For BlackBerry® Curve (TM) 8310 smartphone
BlackBerry Handheld Software v4.5.0.75 (Multilanguage)
Package Version: 4.5.0.75
Consisting of:
* Applications: 4.5.0.52
* Software Platform: 2.7.0.66
* File name: 8310M_PBr4.5.0_rel75_PL2.7.0.66_A4.5.0.52_Dobson.e xe
* File size: 74.38MB
https://www.blackberry.com/Downloads...E3F94D95B11DAF
This is the FIRST OS 4.5 Release in the US.
Celluar One/Dobson Official 4.5 OS 
