The reason X10 never posted the firmware revisions is the older IP legacy cameras were not coded to prevent you from upgrading to the wrong model or version, which if done, renders them useless – and did not offer a way to telnet to them to flash the ROM to fix them if that did happen.
they wanted to be sure of your FW/WUI versions before sending updates to ensure the correct ones are sent.
In this case the camera versions should begin with:
FW: 17.35.2.XXX and
WUI: 20.8.3.XXX – and because they are easy to screw up by updating incorrectly you may not wish to update
The updates were only released to update the camera’s ActiveX for use with IE11.
I do have the files but was asked not to post them in the forum to protect users from damaging thier cameras if you still wish these PM me and I'll send them out.
However if they screw up your camera there is no way to repair or revert.