XT311/XT316 is upgraded to Google Gingerbread Release. XT311/XT316 v2.3.4 OSS Source is available @ v4_34_GB_2.3.4
XT311/XT316 is based on Google Froyo Release. XT311/XT316 v2.2.2 OSS Source is available @ v3_23_Froyo_2.2.2