First of all what are SG and FG? Im guessing gravity? I'm a complete newbie and dont have any equipment so couldnt check it.
The way I made it was from 3.5kg apples which I cooked and squeezed 2litres of juice from, 1 litre apple juice, maybe half a litre of water, 1 cup of sugar, and 2g bread yeast and after a few days I boiled a few raisins and added the water from that after someone suggested it to me. I made it on 2nd of feb and it sat since then in the corner wrapped with blankets, room temperature was around 50-65F so a little cold.
Like I said it doesnt smell absolutely horrid, but it definitely doesnt smell good, and the taste is a bit sour, I didnt spit it out but its not something I really want to drink either. Oh it tasted a little sweet also, was expected it to be completely dry, so the fermentation might have stalled because of the temperatures.