So far, FLIR did not answer my support ticket about my broken camera in detail yet. The status of my ticket and update date does change a lot, so I think they are very busy working on it internally.
I'm really looking forward to their final answer. As of now, I still think they broke something bad in an attempt to fix something else 
My E4 up-switch stopped to work only after two weeks + 3 days of ownership. Legal limit is 2
weeks for returns here. (10 opening days)
FLIR is adamant on their warranty policies, everything has to be sent back (I was told). I don't know if that is a special directive for the E4, but I seem to have understood that they are like that for any of their machines. So the dealer sent my camera back. (I guess he wanted to be nice to me, since I bought four E4 v1.22.0...
The dealer said that unless FLIR gets a RUSH mention and is harassed over the phone for results, and kicked in the butt by a large dealer with some commercial torque, FLIR is notoriously slow for effecting repairs, sometimes taking MONTHS.
Another comment. There was a remark on this thread about dealers having cameras shipped to clients directly from factory, cameras not being shipped to dealers anymore... Some seemed to suspect it was a way to prevent E4 buyers to check the firmware v1.22.x / 2.x at the point of sale...
I was told it is because the company has a tremendous production backlog, and prefers to ship on demand rather than running the production line to stock dealer's inventories. That way, they can supply the end-user demand faster, apparently, instead of having their products told to be BO by many dealers.
The owner of the dealership also told me that FLIR seems to be quite mixed up in their operations, half of the company not knowing what the rest is doing. Or maybe I misunderstood him... Also, everything the dealer owner told me could be utter BS and sweet talk... I'll see when I see the unit coming back from the service center.