This is the version 3B Navigation DVD for the North American MFD2 Head unit. Created with imgburn. Burn using slowest settings. Use Dual Layer Disks(verbatim brand recommended). Testing incomplete, please report if this works, report discs used and burner model. Use with MFD2 Unlock. Unlock Disk and Firmware V50 disk included, burn unlock and firmware to standard Cd's. V50 update may take up to an hour. Unlock Disk tested safe(does not brick head-unit) on NAR MFD2. Unlock disk confirmed working for European MFD2.