>> from what i have read, its read-only
It is indeed Im afraid.
Thompson bowed to pressure from a certain UK ISP and totally removed the ability to be able to do so.
Even from within the CLI there isn't anywhere the target SNR can now be amended from. I spent one evening to see if I could perhaps find a way to do so.. but nada. Many many more have also spent long hours seeing if its possible but so far Thompson seem to have locked this down pretty well.
There is of couple of lines of thought that I did have last year...
1) Broadcom chipsets should all have some sort of shell access as they use BusyBox linux.
- Unfortunately, unlike other broadcom based routers... no-one as yet has been able to access any of the thompson/ST busybox commands and Thompson seem to keep that hidden away too.
2). Since these routers are based on busybox (same as with linux)... this brings about a major point which no-one seems to have taken Thompson up on yet.
Busybox is open source and therefore anyone using it is supposed to also distribute the source under the GPL.
~ Netgear do for their broadcom based routers (which is why there are such things as DG Team and Uber Firmware)... and allow some sort of shell access.
~ The D-links that use the broadcom chipsets allow shell access, and make their code available.
~ BT Voyager series that use the broadcom chipsets all allow shell access... but more interestingly BT got taken to task approx 4 years ago because they didnt make publicly available their source... and ever since have had to make the source available to those who request it.
~ BT also got their wrists slapped again 2 years ago for GPL violation on the HomeHubs.
linky.
.. so this begs the question how have Thompson got away with it?
...... and even better - the homehub is based on which router.. surely not speedtouch?
.......... oh..... and guess which ISP it is, that is rumoured to have got Thompson to lock down their routers so that users can no longer access these commands.