Newest 8300 OS: v4.5.0.110 (Multilanguage)
Software For BlackBerry� Curve (TM) 8300 smartphone
BlackBerry Handheld Software v4.5.0.152 (Multilanguage)
Package Version: 4.5.0.152
Consisting of:
* Applications: 4.5.0.110
* Software Platform: 2.7.0.90
* File name: 8300M_PBr4.5.0_rel152_PL2.7.0.90_A4.5.0.110_AT&T.e xe
* File size: 89.06MB
Download Software:
https://www.blackberry.com/Downloads...E4F82F9F00E7D4
For install instruction to load any carrier 8300 OS on your BB:
1. Download desired OS to your PC
2. Install/run OS to PC
3. Delete vendor.xml file. It's located in c:\program files\common files\research in motion\apploader if the OS is not from your carrier.
4. Connect BB to Desktop Manager and it should prompt the upgrade. If not click app loader and that should initialize it.
5. Do not unplug BB during the process. It will take around 30-60 minutes to complete upgrade.