![[OS update] OS 7.1.0.523 for Blackberry Curve 9220 Davis by AIS](http://patriaguides.com/wp-content/uploads/2012/05/blackberry-icon-150x150.jpg "[OS update] OS 7.1.0.523 for Blackberry Curve 9220 Davis by AIS"){kind=icon}
Jul 5, 2012
Blackberry Curve 9220 Davis user can upgrade their OS now. AIS Thailand officially launch OS 7.1.0.523. Download the OS here
Do not forget to back up your Blackberry device prior to updating the OS as something might go wrong.
[OS update] OS 7.1.0.523 for Blackberry Curve 9220 Davis by AIS