Yamaha RX-V381 Service Manual page 24

RX-V381/HTR-3069
3. The USB UPDATE mode is activated and "USB UPDATE" is displayed. Writing of the firmware starts automatically.
(Fig. 2)
Writing is started.
USB UPDATE
* If "ERROR! xxxx" is displayed during writing of the firmware, refer to "List of Error Messages" to determine the
cause and perform the updating procedure again from the beginning.
4. When writing of the firmware is completed, "UPDATE SUCCESS", "PLEASE..." and "POWER OFF!" are displayed
repeatedly. (Fig. 3)
Writing is completed.
UPDATE SUCCESS
5. Press the "z" (Power) key to turn off the power. (Fig. 1)
6. Remove the USB storage device from the USB jack. (Fig. 1)
7. Start up the self-diagnostic function and check that the firmware version and checksum are the same as written
ones.
(For details, refer to "Confirmation of firmware version and checksum")
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Writing being executed.
VERIFYING...
Fig. 2
PLEASE...
Fig. 3
Sx-X:XX%
S1: NET section (Not available)
S2: MAIN (IC221 on DIGITAL P.C.B.) section
S3: DSP1 (IC242 on DIGITAL P.C.B.) section
S4: DSP2 section (Not available)
S5: OSD (IC222 on DIGITAL P.C.B.) section
POWER OFF!