Which version of Techstream do I need

[JThomas]

I have a 2021 Lexus RX 350 and am wondering which version of Techstream I need to tweak some settings ie Door Locks, Windows, Lighting.

[g0tmilk]

I'd say any recent version, I don't see why it wouldn't work for V15.30.X for instance
I'm not sure there's a lot of changes between versions, except maybe your model won't be found in the list, but that doesn't prevent you to access the car's settings.

First time I ran the app and successfuly connected to my car, I didn't choose the right model, but there was all the options correctly listed and I was able to change some (I didn't realize at first I selected the wrong model).

Another thing : Be sure to have a V2.0.4 MiniVCI cable, I tried with older version (I have both cables) and it didn't work on my 2020 Corolla.