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Now, insert the USB drive into the head unit's USB port. Usually, the correct port is the one labeled for GPS or marked with a specific color (often blue).

⚠️ Critical Step First: Back Up Your Memory Dump (Dump ROM) yt9216bj00012v001 update full

This is the easiest method and is suitable for incremental updates (e.g., going from version 7.3.7_1.1 to 7.3.7_1.2). It does not typically require a PC. Now, insert the USB drive into the head unit's USB port