Problem:
During attempting reading BMW CAS4 d-flash with Xhorse vvdi key tool plus and CAS4 solderless adapter, get this error message: ‘self test error, power module exception, fpga certification error’ anyone got any ideas?
Solution:
There is something wrong with the PCB. You’d better send it back to repair.
Here are the steps to remove the PCB.
Step 1: Loosen the screws on the back of the Key Tool Plus
- On the edge of the device: 8 screws
- Middle position of the device: 4 screws
Step 2: Remove the cover
Step 3: Follow the pictures as below to operate one by one
https://www.vvdishop.com/service/vvdi-key-tool-plus-self-test-fpga-certification-error-solution.html
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