Xprog M Box programmer update to V5.51

Good news!!!Xprog M ECU programmer updated to latest version V5.51 with USB key and BMW CAS4 Decryption feature. Here is the xprog v5.51 software installation instruction by OBDII365.com. Easy 5 steps.

Operating system:  Windows XP/ WIN7

Language:  English/Chinese

Note: Xprog box programmer 5.51 can only use our software CD and our hardware (Item No: SM44). DO NOT update software online.

Xprog 5.51 Software installation guide