P300H P300 Series Modem Installation and Operating Handbook Page 168
10
BOOT CODE OPERATION
10.1
FLASH SOFTWARE UPDATE
The Modem software is contained in a FLASH EPROM, and can be updated without opening the
equipment through the serial port on the Async ESC connector. It is not even necessary to remove the
equipment from the rack BUT it is necessary to route the traffic via another modem, as loading the
software requires a processor reset and will affect the traffic.
To access the `Boot Menu`, power the unit up whilst holding in the `
Óß×Ò
` key, and the following menu
will be displayed:
Serial Flash Update
1 Start Process 2 Reboot
Boot Menu
Option 2 allows the unit to continue as normal. Option 1 leads onto the following menu:
Connect PC to serial port
Press YES/ENTER when connected
Boot, Start Process Menu
At this point the serial cable supplied with the equipment should be connected between the PC ands the
modems `Async ESC` connector, then the
ÇÛÍ
key pressed. This leads onto the following menu:
Waiting for communications with PC... \
Press YES/ENTER key to abandon
Boot, Comms Start screen
The bar in the top right hand corner spins whilst it waits for serial communications to begin.
On the PC
(under Windows) start the download program (winflash.exe) and select the serial port in use
and the new firmware (p300_s.rec). Both the PC and the modem will display the status of the download
as it progresses.
The display should first indicate:
Waiting for PC to start erase cycle /
Boot, Process Wait screen
and will then proceed to:
Waiting for flash memory to Erase /
Boot, Erase Wait screen
When the Flash has erased (which takes approximately 30 seconds) the screen changes to:
