my invoice doesn't give any specific software version. Here's what is on the invoice...

J# 1 26BFZ AUTO TRANSMISSION HOURS: .75

OWNER STATES THAT TRANSMISSN STICKS
AT LOW GEARS WHEN DECENDING INCLINES...
WILL NOT UPSHIFT GOING DOWNHILL
SIB FOR SHIFTING CONCERN
REPROGRAMMED THE EGS PER SIB.

I told them that I wanted the latest software upgrade and they took care of it. No charge under warranty.