Flip your cable my dude
It's been a few months since I tinkered with the code and flashed my Jalapeno so your suggestion was a good one, but flipping the cable did nothing as I had it plugged in properly. Has anybody else had a similar experience? It's maddening not being able to interface with the Jalapeno.
I had this issue intermittently on one of my Jala. Happened after reflashing. Power cycling few times usually fixed it for that power on period.