I don't use a thumb drive. I use my iPhone X with CarPlay
To see software version
1. Start on main page of options
2. Select Settings
3. Select Software Information
4. Select Software Update
After checking, your version number is shown.
My brand new 2018 Bolt EV shows an updated software version of 25.7.0
All posts I see about software seem to show a version 14.x.x
Anyone have any comments about this?
Would appreciate any information.
Thanks