Thanks for helping! However, I still can't figure out what the issue might be.
Model: E4 2.0L, Software: 3.13.0
Only the CRC-32 checksum is the same: (from here
https://emn178.github.io/online-tools/crc32_checksum.html)
common_dll.dll - From backup
CRC-16: 6ba0
CRC-32: 0c2baeaa
SHA256 Checksum: 68d771a652dd310c5f9e6e7d2ed4bfdc8f9dfe50b404311fe7d5899e447ce1c1
common_dll.dll - From liberation package 3.12.0
CRC-16: f861
CRC-32: 0c2baeaa
SHA256 Checksum: 0bc2dbe8b235cab4bcb43b9f320cb4621665fbdfc83f9232933c2d834627720c
I assume that would work just fine?
The two files, original from the camera and the one from the 3.12.0 liberation package.
I tried once again, restoring the original files, everything works fine like out of the box.
I then added the cfc and dll, I get the resolution and disabled menu.
I then added the Basic files, I get the additional palettes and the programmable button, however the two screens stay disabled and only center spot measuring is available.
Edit: Interestingly the image mode is available if i switch do digital camera via the programmable button. However as soon as I switch to thermal, it greys out. Also Even when in digital camera mode and whilst thermal blendign can be selected, it doesn't activate.
Edit2: I tried to leave the basic files and .cgc file and replace the common dll with the orignal one. The only difference is that the programmable button disappears in the main menu. The resolution is still 320x240 and the additional palettes are still there. I also found out, that even though I can take photos, those infrared photos cant be importert to ThermoVision JoeC as I get the error: "ERR: No extracted Raw", see attached picture. So this makes me believe, that it is really the dll that is not working.
Edit3: I tried the common_dll.dll from 3.9.0 which bricked the camera. Back to the liberated 3.12.0 common_dll.dll. Still stuck at the same place.
SOLUTION: Use the new script for the cfc file, all works fine now!
https://www.eevblog.com/forum/thermal-imaging/flir-e4-thermal-imaging-camera-teardown/msg596959/#msg596959