Well when I look at the original docs for the say Mutoh VJ XXXX (i forget the # either 1207 1607 , ????) they all have that program, which tells me Mutoh was a little more involved, they all use the dx5 printhead albeit either water or solvent , i dont know. If you missed the other post I had I want you to tell me this one: I've been working on inkjet printers since bubblejets were phazed out(were they?) Here's my question, or the one asked most the time from me: What are the differences in all the Epson DX5 print heads, other than water and solvent. There are locked heads, unlocked heads, black fpc, green fpc, four-color, six-color.... and lets say mine uses a green 30pin fpc, as long as i use a green fpc one will that work? or I have a machine that uses or has 4 whites connected instead of 2 whites and 2 clears, will that head work any differently or is it still the same? Thanks SuperTech220, apologies if I shoulda started another post, I only added it here because I was hoping you'd see it elsewhere...lol Thanks, ant

If the old PC had a previous version of firmware installed , then you went to a new PC and it updated , that would explain it. That is a very BASIC explanation of mainboard firmware and printhead firing parameters.