if its a (no signal) its a poor signal going to the box , and the splitter is not helping , i would test the downstairs box first, take the splitter out , and just have one box working , to see the if the signal strenth is up "and if your getting all channells , on that line , when you say that you have downloaded 8% firmwear? you need to download the full 100% and sent that to your box , but i dont think that that will help the signal strenth, i think its the cable lenth , and the splitters thats the problem , so test one box at a time ,
mick
July 2009