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レシーバー Pioneer DEH-S31BTのPDF システム・ファームウェアのアップデート手順をオンラインで閲覧またはダウンロードできます。Pioneer DEH-S31BT 7 ページ。 Audio receivers
Pioneer DEH-S31BT にも：ファームウェア・アップデートの手順 (6 ページ), ファームウェア・アップデートの手順 (6 ページ)

Procedure:

1. Connect a blank (formatted) USB storage device to your computer, and then locate and copy the

".scd" file onto the USB storage device.

2. Start the vehicle engine.

3. Connect the USB storage device to the USB input on your unit.

4. If AV Source is On, Press and hold SRC/OFF to set the unit Source OFF.

5. Press the M.C. (multi-control) to display the Initial menu.

6. Turn M.C. dial to select "SYSTEM UPDATE", then press to confirm.

7. Select the "S/W UPDATE" item for updating the unit to the latest software.

8. The "CHECK FILE" screen appears.

-> If it shows "ERROR" on the display, Try the following

"FILE ERROR" Confirm the software is correct, then restart Version up or change a new USB memory.

"ERR->RETRY" Do not turn off the power! Unit will retry Version up automatically.