What has the first try failed?
Now the problem could be due to missing or wrong LA/JCV files. Or maybe Garmin has disabled that logo.bin "upgrade" for Kenwood devices. We need to investigate it further.
Also if you're really not afraid you could try flashing 13xx HWID=972 firmware (as usual, always use original boot.bin, and set fw_all.bin's HWID to 1083). Don't forget to backup NV memory ("rrgn,41,1:/41-backup.bin") before you start.
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