Pioneer DEH-S4120BT Firmware Update Instructions page 2
Audio receivers
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Also See for DEH-S4120BT:
- Operation manual (134 pages) ,
- System firmware update instructions (7 pages) ,
- Firmware update instructions (6 pages)
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28.XX
Procedure:
1.
Start the vehicle engine (in an open, well-ventilated area).
2.
If AV Source is On, Press and hold SRC/OFF to set the unit Source OFF.
3.
Press M.C. (multi-control) dial to display the "Initial" menu, then press to confirm.
4.
Turn M.C. dial to select "SYSTEM UPDATE", then press to confirm.
5.
Select "SYSTEM INFO," then press to confirm.
6.
After the "SYSTEM INFO" screen appears, check the firmware version.
7.
Verify that the firmware on your unit is not already firmware version 08.27, 18.03, or 28.03.
28.03
08.11
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