Vodafone UK and Huawei have begun pushing out an update to Android 4.0.3 Ice Cream Sandwich for the budget-friendly Ascend G300. The update is available as an over-the-air download, but Voda advises G300 owners that the update will delete all person data on the device, and so the carrier's offering a step-by-step walkthrough on its forum.
Ascend G300 owners are told to first download an update to the older Gingerbread-based ROM, then use a "quick backup" utility to save all personal data to their SD card. Later, after the ICS update is done installing, this can be restored from an SD card. It's not the most elegant ICS update procedure we've seen, but there are many entry-level phones that aren't getting ICS at all, so we'll concede that a messy ICS update is better than no update at all.
Full instructions can be found over at the source link.
Source: Vodafone eForum