RH850 R7F701522 on MBUX NTG6 motherboard impossible to read

Hi Members I'm new in this forum and I hope you can help me. I'm trying to read RH850 R7F701523 (i use ,,,522 reference) present on MBUX NTG6 HIGH (Mercedes enterthainment unit) motherboard using VVDI Xprog and NTG6 cable adapter but when I start to "read ID"  it scan a lot of frequency but at the end I have this error:" Try Frequency failed(00)".

Thanks in advance for your help

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