Problem: xtool ps2 heavy duty truck diagnostic tool has this error message : failed to download mcu.bin to the vci , when i do test
Note: This version can diagnose electronic control system of MAN trucks and buses, including engine/ exhaust post-treatment, brake/sustained-action brakes, running gear/gearing, gearbox/powertrain, climate...
Error message: Failed to download mcu.bin to the VCI
Cause: you have wired and wireless communication
Solution: just turn off wired connection
Reference: How to connect Xtool PS2 to VCI
Xtool PS2 truck: