Moog Little Phatty Stage 1. Problem with the arpegiator

Hello
I bought second hand a Little Phatty stage 1. It was update in firmware 3,1.
But I can t make the arpegiator on. Is it working on the little phatty stage 1 …or not even you update to 3,1 system.
Another question (maybe the answer) what s the difference between the firmware 3,1 free update …and the one you have to pay ? Thanks a lot for your help
Emmanuel

You shouldn’t have to pay to upgrade to 3.1 on a Stage I edition. The arpeggiator was added in OS 2.00, so you should have the arpeggiator. You need to push the Value knob in to get it to latch.

The pay update is the exact same update you did at home. It is for the people who would rather send their phatty to the factory to have Moog perform the procedure.