The format of the data in a HG612 with its firmware updated by BT is 'different' to that in a pre-updated modem.
It just needs the data to be parsed & a few tab spaces removed here & there to make it 'readable' again.
As obtained directly from the modem:-
Discovery Phase (Initial) Band Plan
US: (7,32) (871,1205) (1972,2782)
DS: (33,859) (1216,1961) (2793,3970)
Medley Phase (Final) Band Plan
US: (7,32) (871,1196)
DS: (33,859) (1216,1846)
VDSL Port Details Upstream Downstream
Attainable Net Data Rate: 4586 kbps 22884 kbps
Actual Aggregate Tx Power: 6.9 dBm 12.6 dBm
====================================================================================
VDSL Band Status U0 U1 U2 U3 U4 D1 D2 D3
Line Attenuation(dB): 8.2 54.4 N/A N/A N/A 21.9 66.9 N/A
Signal Attenuation(dB): 8.2 53.7 N/A N/A N/A 30.9 66.8 N/A
SNR Margin(dB): 8.4 6.0 N/A N/A N/A 6.1 6.1 N/A
TX Power(dBm): 0.1 5.9 N/A N/A N/A 11.6 6.1 N/A
After it has been 'munged' a little:-
Discovery Phase (Initial) Band Plan
US: (7,32) (871,1205) (1972,2782)
DS: (33,859) (1216,1961) (2793,3970)
Medley Phase (Final) Band Plan
US: (7,32) (871,1198)
DS: (33,859) (1216,1772)
VDSL Port Details Upstream Downstream
Attainable Net Data Rate: 4896 kbps 22236 kbps
Actual Aggregate Tx Power: 6.8 dBm 12.6 dBm
====================================================================================
VDSL Band Status U0 U1 U2 U3 U4 D1 D2 D3
Line Attenuation(dB): 8.1 53.5 N/A N/A N/A 21.7 65.7 N/A
Signal Attenuation(dB): 8.1 52.8 N/A N/A N/A 30.5 65.5 N/A
SNR Margin(dB): 6.0 6.0 N/A N/A N/A 4.8 5.1 N/A
TX Power(dBm): -0.8 5.9 N/A N/A N/A 11.6 5.7 N/A