T-Mobile has just posted an update for the BlackBerry Curve 8320 that will bring your OS up to

The update fixes a bug that caused your new BlackBerry Curve to lose Hotspot @Home capability which basically prevented you from making calls or sending messages over Wi-Fi after using the Switch Device Wizard to restore backed up data from your old BlackBerry to your new BlackBerry Curve.

You can download the update by visiting the BlackBerry Upgrade section of T-Mobile’s site.