While many BlackBerry users are patiently waiting for the upgrade to OS 7.1, most are still on the BlackBerry 6 OS. Rogers customers who have the Curve 9300 are in the same boat as the masses, but an upgrade is now available. If you’re rocking this older Curve you can now download OS 6.0.0.666. As usual, make sure you back up your device before doing so.
Update: Fido has now made the OS upgrade to 6.0.0.666 available. Link is below.
Source: Rogers download & Fido Download