TLDR;With slight modifications of the 2.3 hack, I was able to create 2.11 hack. There is no more ring of crap and the need to downgrade from 2.11 to 2.3.
NOTE: This is not a 2.8 hack.Not sure if there are problems of upgrading from 2.8 to 2.11. For 2.8 use the downgrade to 2.3.You will need the original 2.11 common_dll.dll and conf.cfc to be on the device before applying the 2.11 hack. If you downgraded to 2.3, revert the hacks, upgrade back to 2.11. Details of what i did:Today I received my E4 with 2.11 firmware and calibration certificate from 22 Feb 2016. Downgraded to 2.3, backed up all of the original content and used the instructions for the hack here -
http://fubar.gr/hacking-the-flir-e4/ As expected, after the procedure I got the "ring of crap". Reading Fraser's post, I tried to go back to 2.11 while the patch was applied. Downloaded the update pack from here
http://cdn.cloud.flir.se/swdownload/assets/cameradownload/flir_ex_pn639_v2.11.0_update_pack.zip. Strangely, the res hack appeared to persist after the upgrade to 2.11. BUT, the "Image mode" menu was deactivated and there was no spot metering. Going back and forth between 2.3 and 2.11, I found out that the problem was in common_dll.dll (which is overwritten by the upgrade from 2.3 to 2.11).
I looked at the Python scripts and disassembled common_dll.dll to figure out how the 2.3 hack was working. After few hours, I found out that if I just change the offsets in common_dll.dll.delta, so that the signature checks are disabled in the 2.11 version of the file (the offsets for 2.11 are slightly different than those for 2.3) and followed the exact same procedure in
http://fubar.gr/hacking-the-flir-e4/, except the downgrade to 2.3, I now have res hack and menu hack working, and the ring of crap is gone. Didn't need to change the conf.cfc.delta files. I guess the de-activated "Image mode" menu and the missing Spot Metering were just a side effect of the signature check failures, because they were in a different place within common_dll.dll.
I am attaching the modified script package (removed e6 files, as they seem to work slightly differently at first glance) and an image from the camera after the fixes. Use
http://www.7-zip.org/download.html to decompress the attached .zip file. It is actually a .7z file, with changed extension, so I can attach it here. When using .zip, the file is slightly bigger than the allowed attachment size of 1000KB.
Happy hacking and the usual - "You do this on your own risk."