The main difference between V1.0 and V2.0 on A890GXM-A is that V2.0 can support "CPU Unlock" feature which allow to enable AMD specified 2/3 cores CPU to 4 cores. You can enable "CPU Unlock" item under M.I.B. III(MB Intelligent BIOS III) from BIOS setup menu. Version 1.0 does not support this feature.
