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English is not my native tongue.
I apologise for all my grammar, spelling and idiom errors.
Well, the VFD update thing was to sort out problems some people had with interference that was affecting the remote control but thought it might be worth a go. There is also a front processor upgrade available but I can't remember what that does. Have you tried downloading one of the different VFD layouts that are available in the feeds?
Failing that, I would take a backup and do a fresh flash and see if that sorts the problem.