how do i know if i can upgrade my huawei ascend ii?

If your Huawei Ascend II already has the Muve Music Icon in the Applications menu, or on your home screen, then you already have the most current version of software. If you are still unsure if you need to upgrade your software you can check out your current software version on your handset: go to: Menu>Settings>About Phone if your current version is Android Version 2.3.5 you have the most current software version.