Not sure what's been used last time. I just want to check the tranny firmware and upgrade if needed. I have a hard downshift from 2nd to 1st and it looks like there is a firmware that fixes this issue by not allowing to shift to 1st if the car didn't come to a complete stop. I am not sure if this will fix my problem but I want to try it. I don't have a GT1 yet but I was planning to get one. It looks like from DIS v45 Up gt1 has the programming done via SSS. At this point I am not sure what to get to be able to do the EGS firmware check/update. There are a few DIY for the latest DIS v57 and SSS v34 which I can try.
Would this setup let me do the tranny check/upgrade?