I have to say that the printer I have is a Twinjet, a replica for Mimaki Jv33. Has the same board, head, damper...everything, the driver also.
I would try to put a new firmware though I have some problems with ERROR 50 MEDIA DETECT. I saw in one thread here on signs.101 , that installing a new firmware, solved the problem. This is what I'm trying to do. Any suggestions, please?