How to Fix VVDI Prog Fail to Read 1999 Passat ECU 24C02?

Question:

VVDI PROG has a problem when writing to a 24c02 Eeprom from a 1999 Passat ECU, It reads well but it doesn’t let me write?

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Here is the Answer:

Xhorse VVDI PROG cannot write this chip, or try more a few times, if it still fails, then the chip is not supported.

 

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