I had a problem with the xhorse vvdi prog. It failed to read Range Rover velar 2018 Renesas V850 D70F33506 mcu and gave error try frequency failed.
1.Follow the wiring diagram here to make a connection. Connect a 1Kohm resistor between RTXD and VCC
2.If fails again, change frequency and try again.
Searching on Frequency for this MCU And click Reset Sec (Security) for reading.