There are 2 ways to change Xhorse VVDI BE key frequency between 315 MHZ and 433MHZ. Xhorse BE key is designed to work with VVDI MB Tool and other MB key programmers.
1: Change VVDI BE key frequency with PCB resistor
2. Change XHorse BE key frequency with VVDI MB Tool
OEM Frequency: 315MHz
In VVDI MB software, select Set key remote frequency.
Choose 433MHz and set frequency
Change frequency to 433MHz success
Xhorse VVDI BE Key Pro Plus Best Quality Benz Smart Key Shell 3 Button Single Battery