Duplicates 1

What you are seeing might be a symptom of a problem with flash memory error, fixed in 6.04 and also 5.08, see Release notes - IQANdesign 5

If the MD4 was running a software version 5.07 or older, or software version 6.00-6.03, then that is one thing I would suspect at least.

You could try to connect to the module with IQANrun to send a newer version of the application. But it is more likely that the module cannot be fixed in the field. Get in contact with your aftersales contact.