Xhorse VVDI BMW Software Update to V1.6.6

---

Xhorse VVDI BMW software released to version 1.6.6. 

2021-01-28            
Require firmware V1.4.7            

  BMW V1.6.6  
1. Support read MSV90 ISN from OBDII
2. Support disable/enable keys for G-series
3. Improvement for E/F/G series programming and coding
4. Bugfix