All Kenwood firmware updates?

[moviebrain]

What is the chance this will help me decompile the firmware update for a car head unit? Or would it likely only be for their handsets?

[travisgoodspeed]

Zero chance. This is only for amateur radio.

[travisgoodspeed]

Realized too late that you might be talking about the TH D710. That model is a lot closer to the TH D71 than the D74, so I don't expect compatibility.

Update files are here if you'd care to try yourself.

https://www.kenwood.com/i/products/info/amateur/tmd710_panel_update_e.html