Just finished doing the 2.0 upgrade on an early build LE (#51). Had some issues at the end. It turned out the JUSB connection to the CPU did not work and ended up using a different (spare) port. Lloyd and Butch Peel helped me through it. I have nothing but positive things to say about both of those guys -- and JJP's support. To JJP's credit, they knew the lighting system was a problem, and they offered a real and stable solution. They are making no money on that kit. Not to mention the labor in packing the materials and supporting the owners who, like me, have no engineering or mechanical background and no clue. My law degree and education helped me buy the pin, but it's not helpful in maintaining it.
I have all my old lights (not sure if they are the 5 or 7.5 boards). I'll post some pictures. Glad to know have stable lights.