Determine mainboard version

Support Article No. 4514
Latest updated: 9/15/2014

Remove the battery and look at the serial number of the unit.

  • If your S/N starts with "I600X" go to KB3720
  • If your S/N starts with "I600AX" go to KB3724

At the bottom of each of this pages you see a list of different OS version. Pick the one for your device by looking at your S/N. For example "AX4" is for a S/N starting with "I600AX4...".