Yes, the informations of TT about the Africa-map are 100% (*) false and not for the carminat-version. Don't waste your money! The only (low cost)way to have Tunisia: Use the Go-App v1.16.1
(*) You can type "IA" (Carminat) or "M8" (Go 920) or "QQ" (Go 6000) into the device-compatibility-mask of the Africa-map from the link in #7. Every time you get "Great your device is compatible with the selected item." What a nonsense, the needed maps (and her content) of the devices Carminat and Go920 are definitely not the same version like Go6000!