Here we’ll introduce 2 ways to change Xhorse VVDI BE Key Yellow PCB frequency. The default frequency written on the package is 315MHz, you can manually change it to 433MHz by removing the FRE resistor or performing on Xhorse VVDI Key Tool Plus.
Method1: Modify by Xhorse Key Tool Plus
1. Put the BE Key chip into the Key Tool Plus Pad top groove.
2. Immo programming >> Europe >> Benz >> Select from system >> Read write key >> VVDI BE key >> Start programming >> Read BE key frequency
We can see the key is 433Mhz.
3. Set BE key frequency >> 315 MHz
Set frequency success!
Go back to check frequency again.
BE Key Pro has changed to 315MHz.
Method2: Manually change by removing RFE resistor.
* You’ll need a soldering iron in this way.
1. Remove the FRE resistor marked on the chip, be careful when removing it.
After done, read its frequency again.
Now the frequency is changed from default 315MHz to 433MHz.
2. To re-solder the resistor back, be sure to align the solder joints.
Read frequency again, it has changed back to 315MHz.
