i bought used bb bold 9900 which comes from different country with os 7.0 and splash screen shows a logo of (3) three but now i am in pakistan and using a different carrier which is telenor Pk and my carrier does not offer os 7.1. i want to upgrade my bold 9900 to latest 7.1. so can i instal os 7.1 which release by docomo or any other carrier for thier users if yes please let me know.
i know i am not good at english so my appologies
Regards,
aadi