well, since it happens to both the aftermarket as well as the factory HU, I'd guess it's nothing on the car itself.
Perhaps TA is turned on and locally it's in french for some reason.
I'm thinking, Bose with factory wiring, as in no extra added wiring and then the Kenwood with extra wiring, so it works with the Bose speakers, it's hard to imagine that there is a fault with the car, especially since all of it has been reverted to factory spec.
It's got to be the local airwaves.
Just my thoughts...