that's strange that they are having all these problems... lets see have sold appx 100 of these transmission I know of only 2 flash updates to the transmission computer. I have repaired only one , valve body replacement for a shift concern, I do 100% of all transmission repairs in the shop, along with any that Chrysler may send me to look at.
as far as updates to computers I will tell you that each and everyone of your tv more than likely need an update of some sort be it PCM, BCM,TCM, WCM, CCN, or what other module your TV has and you wont know it unless your dealer checks it with a scan tool ( no your local repair shop will not have acess to them) Even on my 2005 jeep a flash shows up once in awhile, I check mine when I service them.
Mel Scwhentner
Chrysler tech/shop foreman 40 years
A.S.E mastertech certfied 30+year
2012 Jeep wk
1965 Chrysler 300
1951 Desoto s15
1965 Chrysler 300 sport
1951 Desoto S15 custom
2015 Viking FQ