Problem Description:
When updating the DoIP firmware on the VXDIAG VCX SE Benz DoIP device, an error message appears: “Checksum firmware failed”.

Solutions:
Method 1:
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Connect the device to a stable PC power source.
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Change your network environment (preferably use a wired connection or try a mobile hotspot).
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Retry the firmware update.
Method 2:
- Change your network environment (preferably use a wired connection or try a mobile hotspot).
- First, update the Benz C6 driver in VX Manager.
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Then proceed to update the VCI firmware and DoIP firmware in order.