The Android 4.0.4 Ice Cream Sandwich firmware update started rolling out for the Xperia go, Xperia sola and Xperia U over the last few days. As always, the firmware will be made available to each country & carrier over the next few weeks. If you have avoided flashing your handset to the latest firmware and are waiting patiently in the wings for the update to arrive you’ll be glad to hear that Sony Mobile has just released the SI number list for each handset.
The SI number of each Xperia handset shows which country and carrier that the mobile belongs to. As Sony Mobile releases firmware for that SI number, they will update the list. The SI number is normally available behind the battery, once you’ve located it, hit the links below to find out if your update is live.
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