If you have a problem with Xhorse MB Smart keys. Cars would not recognize them, and sometimes they don’t run engine after programming.
Please check version of your key. Xhorse had a few updates on these keys.
How to Update Xhorse MB Smart Key with VVDI MB?
On VVD MB click other functions, then Update MB Smart key
Set key frequency/upgrade smart key
1. Support specific manufacturer keys to change the key frequency through IR
2. Support the smart key of a specific manufacturer to upgrade to the latest version of the server through IR