Hard to believe that carriers are releasing an official OS update. Usually they can take forever, leading some folk to experiment with the beta OSs on the net. AT&T has released the 4.5.0.158 for the Pearl 8110 and Rogers has released to 4.6.0.250 for the Curve 8900.
If you need any assistance with upgrading, you can go here
You can get the get AT&T OS here and the Rogers OS here
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