Software For BlackBerry® Curve(TM) 8520 Smartphone
BlackBerry Handheld Software v4.6.1.473 (Multilanguage)

Package Version: 4.6.1.473
Consisting of:

• Applications: 4.6.1.320
• Software Platform: 4.2.0.137
• File name: 8520wifiM_PBr4.6.1_rel473_PL4.2.0.137_A4.6.1.320_Fido.exe
• File size: 117.8MB

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

• Download: OS 4.6.1.320 for the BlackBerry Curve 8520 from Fido
• How To:
  • Backup And Restore Your BlackBerry
  • Upgrade your BlackBerry Operating System (OS)

Please report any feedback/findings in the comments.

REMEMBER: It is recommended that you make a backup before attempting to upgrade your BlackBerry just in case something goes wrong during the upgrade process. *