How to fix Xtool H6 pro with kc501 read write BMW cas4 failed?

Xtool Diagnosis Tool

Problem: I have a Xtool h6 pro with kc501 (same as Xtool A80 PRO), I’m trying to read/write a BMW cas4 with no success, I follow the wiring diagram and tried the 2 methods the app shows. I’ve even connected the kc501 to my pc but still no comms.
Xtool H6 Pro Read Write Bmw Cas4 01 Xtool H6 Pro Read Write Bmw Cas4 02 Xtool H6 Pro Read Write Bmw Cas4 03


Experienced user’s advice:

The black wire and white wire.
Move white wire to the hole in the pcb and try again. engineer replied:

Sometimes we have the same problem with Xtool h6 pro ( H6 PRO = Xtool A80 PRO in the aspect of software  ) , we find out it has a poor welding and then re-solder it again, finally we can read and write the data successfully.


Hope it helps!