Updating Firmware - Yamaha RX-V675 Service Manual

■ UPDATING FIRMWARE

When the following parts are replaced, the firmware must be updated to the latest version.
DIGITAL P.C.B.
FPGA Flash ROM: IC77 on DIGITAL (1) P.C.B.
DSP (TI) Flash ROM: IC923 on DIGITAL (1) P.C.B.
NETWORK Flash ROM: IC953 on DIGITAL (1) P.C.B.
● Confirmation of firmware version and checksum
Before and after updating the firmware, check the firmware version and checksum by using the self-diagnostic
function menu.
Start up the self-diagnostic function and select "S4. ROM VERSION/CHECKSUM" menu.
Using the sub-menu, have the firmware version and checksum displayed, and note them down.
(For details, refer to "SELF-DIAGNOSTIC FUNCTION")
*
When the firmware version is different from written one after updating, perform the updating procedure again from
the beginning again.
● Initializing the back-up IC (EEPROM: IC82 on DIGITAL P.C.B.)
After updating the firmware, the back-up IC MUST be initialized by the following procedure to store the setting
information (soundfield parameters, system memory and tuner presetting, etc.) properly.
Start up the self-diagnostic function and select "S3. FACTORY PRESET" menu.
(For details, refer to "SELF-DIAGNOSTIC FUNCTION")
Select "PRESET RSRV", press the "MAIN ZONE " key to turn off the power once and turn on the power again. Then
the back-up IC is initialized.
● Required Tools
• USB storage device
• Firmware
R0331-xxxx.bin
● Preparation
1. Download the latest firmware from the specified download source to the folder of the PC.
2. Copy the latest firmware from the PC to the root folder of the USB storage device.
Note: When the latest firmware is copied to a sub-folder of the USB storage device, the update will not proceed.
RX-V675/HTR-6066/RX-A730/TSR-6750
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