Xhorse VVDI Key Tool Plus 95256 chip write failed error tips

Xhorse key tool plus support BMW FEM / BDC types, customer use the VVDI Prog read the data from chip, and key tool plus or VVDI2 load the data write back.

We received one feedback that BMW f30 2014 can not write back the info to the 95256 chip in the fem / bdc itself via godiag fem / bdc + test platform

Here is the procedure:

The chip type:

VVDI PROG read the data

VVDI Key Tool Plus process:

The first step: Backup the code

1. After connecting the FEM/BDC system on the car or platform, back up original coding file through OBD

2.After pre-process starts, it is recommend not to close this page

The second step: Service mode

1.Open FEM/BDC shell, find 95128 or 95256 chip(refer to location map), use editor to read EEPROM data

2. Load original EEPROM and prepare service EEPROM, write service EEPROM data to 95128/95256 chip

3.Restore FEM/BDC shell, provide +12v and connect OBD

And second step error: write failed

From the pic, you can see the connection is bad.

Here is the engineer reply:

The pin contact is not good, not the wrong connection. Clean the pin gray waterproof glue then check.

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