Never mind, i got it to work but by using both Jid's and Broadstairs' commands i cannot get the SNR lower than the 10% on the slider. I tries adsl configure --snr 1 but that gives me a 3.0db just like 10% on the slider.
Ok, i used the adsl configure command posted by broadstairs and even if i make it snr 1 when i refresh dmt it still syncs with a SNR of 3db ( which is the lowest on the slider, 10%). So, is there any way i can go lower than that or not?