why would i want to upgrade my huawei mercury’s software?

Upgrading the software on your Huawei Mercury will enable your handset for Muve Music, Cricket’s Unlimited Music product. With Muve Music, Cricket is the first U.S. wireless carrier to offer consumers unlimited music (full track downloads, ringtones and ringback tones) as part of a new wireless rate plan. For unlimited talk, text, web, music & more. Visit the phone + plan page for more details. This product offering also features an innovative new digital music service called Muve Music, the first music experience designed specifically for the mobile phone.