12-28-2012 01:17 AM
Welcome to BlackBerry Suport Forums
Currently which OS version you have on your BlackBerry® Curve 8520,To know that : OS 4 – 5 = Options > About > first set of numbers on the third line ?
If your device is running on prior to OS 5 then yes you can update your device software to OS 5.You can check your Carrier and see if they have any higher OS bundle for your device model from what you have on your device: Carriers .
Please check it and let us know if you need further help.