Problem with Kathrein 912...

I want to install Enigma 2 in Kathrein 912(in usb,not in the flash) but I can not install 2nd bootloader image.
When I try update image with usb stick Kathrein show message"no updates file"(i tried with few usb flash drives,so problem is not in the flash drive).
I try also install image through KCC(kim.file) also did not work.
I know that 912 has a different hardware than 910 but 922 also has different hardware than 910,and 922 has no problem with the installation 2nd bootloader image!
I appreciated all the help with this problem!

Problem is solved!