UPDATE This OS is also available for the BlackBerry 8700. *

These software versions contain a fix for the BlackBerry Browser bug I mentioned a few weeks ago. For more info about this bug click here.

Software For BlackBerry® Pearl (TM) 8100/8120, Curve (TM) 8320, 8800 and 8820 smartphones
BlackBerry Handheld Software v4.5.0.294 (Multilanguage)

Package Version: 4.5.0.294
Consisting of:

• Applications: 4.5.0.174
• Software Platform: 2.7.0.105
• 8100
  • File name: 8100M_PBr4.5.0_rel294_PL2.7.0.105_A4.5.0.174_AVEA.exe
  • File size: 93.58MB
• 8120
  • File name: 8120M_PBr4.5.0_rel294_PL2.7.0.105_A4.5.0.174_AVEA.exe
  • File size: 97.96MB
• 8320
  • File name: 8320M_PBr4.5.0_rel294_PL2.7.0.105_A4.5.0.174_.exe
  • File size: 92.43MB
• 8800
  • File name: 8800M_PBr4.5.0_rel294_PL2.7.0.105_A4.5.0.174_AVEA.exe
  • File size: 90.31MB
• 8820
  • File name: 8820M_PBr4.5.0_rel294_PL2.7.0.105_A4.5.0.174_AVEA.exe
  • File size: 92.47MB
• 8700
  • File name: 8700M_PBr4.5.0_rel294_PL2.7.0.105_A4.5.0.174_AVEA.exe
  • File size: 78.92MB

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

• Download: OS 4.5.0.174 for your BlackBerry from AVEA
• 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. *

The File name is different according to the BlackBerry model you choose, just in case. Not sure how different this is from OS 4.5.0.161, so if you notice any differences let me know in the comments!

BlackBerry Handheld Software v4.5.0.255 (EastAsia)

Package Version: 4.5.0.255
Consisting of:

• Applications: 4.5.0.162
• Software Platform: 2.7.0.103
• File name: 8100EastAsia_PBr4.5.0_rel255_PL2.7.0.103_A4.5.0.162_Vodafone_Essar_Limited.exe
• File size: 89.67MB

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

• Download: OS 4.5.0.162 for the BlackBerry Pearl (8100,8110,8120), Curve (8300,8310,8320) and 8700 from Vodafone Essar Limited
  
• How To: Upgrade your BlackBerry Operating System (OS)

REMEMBER: Install at your own risk. Always make backups before making major changes/upgrades/downgrades to your BlackBerry.

• Package version: 4.5.0.92
• Application version: 4.5.0.69

A while back I posted that they had the 4.5 OS for 8110, now they have it for other BlackBerry devices:

• 8100
• 8110
• 8300
• 8310
• 8700
• 8800

Get OS 4.5.0.69 for your BlackBerry.

PLEASE REMEMBER: Always make backups before making major changes/upgrades/downgrades to your Blackberry.

By the way…I’ve always wondered. Is it BlackBerries or BlackBerrys? I see both used all the time.

What is the official plural for a BlackBerry?

Firmware Version:

• Package Version: 4.5.0.52
• Applications: 4.5.0.37
• Software Platform: 2.7.0.55

For devices:

• BlackBerry Curve (TM) 8310 smartphone
• BlackBerry Curve (TM) 8320 smartphone
• BlackBerry Pearl (TM) 8110 smartphone
• BlackBerry Pearl (TM) 8120 smartphone
• BlackBerry 8820 smartphone
• BlackBerry 8800 smartphone
• BlackBerry 8700 smartphone

Get OS 4.5 from MTN South Africa for your device.

(via BerryReview)

This OS is official from Orange France.

Get OS 4.5.0.69 for your BlackBerry 8700.