Ensure that you are on 4.1 004 image, this has the troublesome drivers.
Halt enigma2 with command "init 4"
Download and extract the attached drivers.
The drivers are called "bcmlinuxdvb.ko". Follow the file path and replace the existing ones. /lib/modules/3.9.7/extra/
Reboot receiver with "init 6" command.
Please post back with confirmation if problem is fixed. The attached drivers are not for the twin