@ Taucher
the camera is actually working, yet I made the mistake to install the 2.3.0 update. So what I've got now is something like a "true" E8 but without the chance to install the extended menus. When I do so, the camera will boot (progress bar working) but when it reaches just the final step, the screen goes black. The network interface is still active so I can revert the patch and everything's okay again. I also tried installing the files of the menu patch one at a time, and as soon as I install the facet_z3.rcc container, the camera won't boot completely anymore. When I actually leave the rcc file original and only install everything else, the extended menus seem to work, yet the icons of the menu structure are missing and everything's arranged on the screen somewhat awkwardly... That's why I think there's a chance to assemble a new rcc container from the existing ones that may solve the problem. I'm aware that this may require some experimentation but at least it wouldn't harm the camery since the web interface keeps working all the time and I can always return to the known running configuration.
I won't attempt a "downgrade" since I've heard from others that there's a good chance to end up with a "bricked" camera that way.
@ Tugbay
Seems like only the "user front end" of the web site is installed on your camera. But since this web site refers to the /service/index.asp page, there's little that contradicts simply installing these pages from a previous firmware version. I think I even did that on my camera after I installed the 2.3.0 update. If you need further info, please contact me directly by e-mail.
Cheers,
Thomas