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System Firmware Update Instructions for Pioneer Audio Receivers
(DEH-S31BT, DEH-S4100BT, DEH-S4120BT, DEH-S5100BT, DEH-120BT, DEH-S6100BS,
DEH-S6120BS, MVH-S310BT, MVH-S312BT, and MVH-S512BS)
This firmware update (version 08.27, 18.03, or 28.03) applies only to the following models of Pioneer
products sold in the United States and Canada. Installation on any other product could cause
irreversible damage.
DEH-S31BT
DEH-S5120BT
MVH-S312BT
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 CD receiver listed above.
•
A USB storage device meeting the following requirements.
-
2 GB or larger in capacity, formatted to FAT32
-
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.
Checking the firmware version
Check whether the firmware of your unit needs to be updated by checking the version number of the
firmware. The update version to download and install will depend on the existing firmware version on your
unit.
Your unit's current firmware version Update version
08.XX
18.XX
28.XX
DEH-S4100BT
DEH-S6100BS
MVH-S512BS
DEH-S4120BT
DEH-S6120BS
08.27
18.03
28.03
DEH-S5100BT
MVH-S310BT