Update Firmware - Marantz SR5500 Series Service Manual

6. UPDATE FIRMWARE

Software for CPU and DSP can be updated.
Have update application software. ("UpgradeDSP.exe" and "H8Download.exe")
There are two mode of download, regarding to the target of software as bellow.
Mode 1: Update DSP's software to 4M Flash-ROM.
This mode is to update the software for DSP.
The target devise is 4M Flash-ROM (IC20) on CUP11706Z (DSP PCB).
HT-AS2000 needs to be set update condition, by three front keys.
Mode 2: Update CPU's software to internal Flash-ROM.
This mode is to update the software for DSP.
The target devise is internal flash ROM of CPU (IC28) on CUP11706Z (DSP PCB).
HT-AS2000 needs to be set to writing condition, by pushing internal switch from back-panel.
The following items are required for updating.
RS232C Dsub-9 pin cable (female to female/Straight type)
Windows PC (98, NT, ME, 2000) with RS-232C port.
Update software to CPU.
Update software to DSP.
Use RS232C Dsub-9 pin cable (female to female/Straight type) to connect PC and the unit.
COM port on PC needs to be set by dialog box for each program. COM port can be set from COM1 to COM5.
Download Firmware for DSP (Mode 1)
1. Put the "DSP upgrade" folder into anywhere on your PC's hard disc.
2. Connect PC and the unit with the RS-232C cable.
3. Turn on the unit.
4. Press ENTER, MUTE and T-MODE buttons simultaneously more than 5 seconds to turn the unit into Loading Mode.
5. "LOADING MODE" will be shown on FLD.
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