what version of Jetpack was shipped on my Jetbot kit in September, 2019?

I am trying to update my Jetbot so that it can run the object following example program from Nvidia.

Can you tell me what version of Jetpack shipped with my kit, which arrived in September, 2019?

Does Sparkfun have an updated Jetbot image?

Will Sparkfun’s downloadable modification files work with Jetpack 4.2.1 or the newer Jetpack 4.3?

Thank you for your help.