Wait - I am NOT taking sides here, but are both the seller and the buyer aware that a Picasso IV DOES NOT WORK without the snap-off module?
Lots of people think this is just the flicker fixer, which it isn't. The flicker is actually placed on the Picasso IV itself.
I had the same experience, but the other way around: I bought a Picasso IV which was sold as defective (explicitly), but was tested without the module. Needless to say, testing the board myself - it did not work. Attach the included snap-off module, and hey presto! A working PIV.