Plug the drive into the head unit's primary USB port. Trigger the Update:
: Only update if you are experiencing issues; "if it works properly, it is not necessary to upgrade," as the wrong file can break the unit. zwnav firmware
: Format a 32GB (or smaller) USB drive to FAT32 on your computer. Plug the drive into the head unit's primary USB port
Updating the firmware on a ZWNAV Android head unit typically involves two primary methods: an automated or a manual USB Upgrade . Because incorrect firmware can permanently damage (brick) the unit, it is critical to use files specifically intended for your exact model. Pre-Update Requirements "if it works properly