Newest 8520 OS 4.6.1.424/4.6.1.286
 

Software For BlackBerry® Curve(TM) 8520 Smartphone

BlackBerry Handheld Software v4.6.1.424 (Multilanguage)

Package Version: 4.6.1.424
Consisting of:

* Applications: 4.6.1.286
* Software Platform: 4.2.0.122
* File name: 8520wifiM_PBr4.6.1_rel424_PL4.2.0.122_A4.6.1.286_O range_UK.exe
* File size: 116.1MB

Note: The Software Platform and Applications version numbers can be found under Options-About screen on the handheld.

Download HERE

For install instruction to load any carrier 8520 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.
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 may take around 30-60 minutes to complete upgrade.