Please Share the xdsl firmware, I cant extract this
Downloads for 5.9.0.C.1.7-5.9.0.A.0.1
https://ftp.avm.de/fritzbox/fritzbox-7412/deutschland/fritz.os/FRITZ.Box_7412.137.06.85.image
Extracting the source files:
7z e FRITZ.Box_7412.137.06.85.image -r filesystem.image 7z e filesystem.image filesystem_core.squashfs unsquashfs4-avm-be filesystem_core.squashfs -e lib/modules/dsp_vr9/ cd squashfs-root/lib/modules/dsp_vr9/ bspatch vr9-B-dsl.bin vr9-A-dsl.bin vr9-A-dsl.bin.bsdiff
NOTE: unsquashfs4-avm-be is part of http://freetz.org/. You have to checkout the freetz source and build the tools (make tools) to get the binary. NOTE: p7zip version 15.09 or newer is required to extract the images.