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XHORSE VVDI BE Key Pro For Benz XNBZ01CH Remote Key Chip Improved Version default frequency is 315MHZ,it supported to change frequency to 433mhz. Here we will introduce two ways to change Xhorse Benz Key PCB frequency.

1.Remove PCB FRE resistor change to 433MHZ.

2.Change Via VVDI MB Tool Software.

You can use VVDI MB software check key frequency firstly in EIS Software,other function set frequency.

Then it shows 315mhz when you read frequency.

Choose 433mhz to set,and check frequency again.

You can also check the video

 https://youtu.be/Y3gW0UvR8Dc

This is from Blog.xhorsevvdi.com:  How to Change Xhorse VVDI BE Key Pro Benz PCB Frequency?