The TyTN shipped with Windows Mobile 5 AKU 2.3 [REF].
Official ROM updates are or were available for several versions of the TyTN, including the AT&T/Cingular 8525,[REF][REF] the Dopod 838Pro,[REF][REF] the i-mate JASJAM,[REF] the O2 XDA Trion,[REF] and the Orange SPV M3100[REF] (AKU 3.3.0).