I just added a new patch for support the SNR value Tweak, Annex M support, and fix LLC/VC-MUX encapsulation.
I hope that it will be added to the main branch soon.
Tested on my Comtrend router over the generic Annex A version (BS-v0.3.9_bcm96348GWV_ANNEX_A.img).
To check the patch, you only need to Telnet/SSH to your router and overwrite the files in the patch.
Where i can find this patch ???
Go to: http://sourceforge.net/tracker/?group_id=221657&atid=1052840
Patches are: 3515081, 3516109, 3515746
I hope next version will include it!