Marantz NR1506 /U1B Service Manual page 50

1.3. File structure on USB Memory
Copy the update files to the USB memory with the following structure.
USB memory root
Model Name
NR1506 U
NR1506 N
NR1506 K
+ firmwares
+ X00100XXXXXX
+ APLD.bin
+ DSP.bin
+ enc_update.xml
+ GUI.bin
+ IMG.bcd
+ MAIN.bin
+ SBL.bcd
1.4. Insert the USB memory into the USB port.
NOTE : Remove the LAN cable from this unit when performing updates.
1.5. Start the update.
While holding down buttons "SOUND MODE" and "DIMMER" simultaneously, press the power button to turn on the
power.
1.6. Display during USB update
After around half minutes, display shows the following message.
Display
FLD
U S B U p d a t e
1.7. Press the "ENTER" key on the remote control unit or this unit.
Then start Firmware Update.
Display
FLD
U p d a t e F i l e C h e c k
Model Area
North America (U)
Europe (N)
China (K)
Download firmware
in USB flash drive.
Product ID
100100390100
100100390200
100100390500
S t a r t
50