I try to read e38 ecm flash online with VXDIAG VCX NANO GM and SPS (Service Programming System) subscription.
It failed me and dislayed an error: E4399 Server Error. Reading ECU data from device or controller failed.
Solution:
To perform VXDIAG GM Online programming and access SPS, you have to install PassThru driver first.
www.vxdiagshop.com
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