System Firmware Update Instructions for Certain Pioneer In-Dash AV
Receivers
This firmware update applies only to the following models of Pioneer In-Dash AV Receivers sold in the
United States and Canada. Installation on any other product could cause irreversible damage.
DMH-W4600NEX DMH-W4660NEX DMH-WC5700NEX DMH-WC6600NEX
DMH-WT7600NEX DMH-WT76NEX DMH-WT8600NEX DMH-WT86NEX
IMPORTANT
Please download and print these firmware update instructions before downloading and installing the
firmware update. It is important that you complete all steps correctly and, in the order, described below.
Note: If you have any questions, please contact Pioneer Customer Service toll free at 1-800-421-1404,
Monday through Friday, 7:30 AM - 11:30 AM and 12:30 PM - 4:00 PM (Pacific Time), excluding holidays,
or by email through parts.pioneerelectronics.com/contact.
In order to perform this update, the following items are needed:
• Pioneer In-Dash AV receiver listed above.
• A USB storage device meeting the following requirements:
- 512 MB or larger in capacity, formatted to FAT32 or NTFS
- Blank (should not contain any files)
CAUTION: DO NOT turn your unit off or eject the USB storage device while the firmware is being updated.
Any interruption to the firmware update process could cause irreversible damage to the unit.
WARNING: Install this update only when the vehicle is safely parked in an open, well-ventilated area,
such as an outdoor parking lot, where you can safely keep the engine running to maintain power to the
battery. NEVER RUN YOUR VEHICLE’S ENGINE IN AN ENCLOSED SPACE, WHICH CAN QUICKLY
FILL UP WITH TOXIC CARBON MONOXIDE GAS, LEADING TO SERIOUS INJURY OR DEATH.
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