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4. Ensure your PC network settings have a Subnet Mask of 255.255.255.0. This can be
easily checked using DOS command IPCONFIG.
5. Extract FlashUpdate program, and start the program.
6. If you are running Windows firewall you may be prompted with the following message.
Select Unblock so that FlashUpdate program may operate. If any other firewall software
is operating, disable it.
7. Copy new firmware files to a known location on the hard drive of your PC. Do not unzip
these files.
8. Specify location of firmware bootloader file (epm_mrb_Honeywell_E24G_ x.x .bin.gz)
and firmware application file (epm_E24G_ x.x .bin.gz) using the Browse buttons in the
FlashUpdate program.
9. Connect PC to module RS-232 serial port with "straight-though" serial cable.
10. Select COM port connected to module in the FlashUpdate program.
79
XYR400E Ethernet Modem
Version 1
5/1/08
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