Specifications

Reflashing the Flash Boot Device
DD
Page D-18
Force Update Flash Recovery Process
A force update is necessary only to:
• replace a system or video BIOS image damaged by power
failure during an earlier flash update process
• recover from accidental writes to the FBD
• enable FBD recovery when the system cannot boot to a DOS-
compatible operating system
Perform the force update flash recovery process by connecting a
null modem serial cable between the EPC-30 COMA port and a
source computer on which is installed an SCP that supports the
Xmodem protocol. See Figure D-2. The SCP should also support
terminal emulation, as the source computer serves only as a remote
console during the flash recovery process. The SCP dictates
necessary cabling between the source computer and the EPC-30,
however, the only RS-232 signals required by the EPC-30 are Tx,
Rx, and GND. See Chapter 4 for the COM1 port connector pinout.
EPC-30
COM1
Source Computer
Serial Port
TXD
RXD
GND
TXD
RXD
GND
Figure D-2. Null Modem Cable Connection.
Power up the EPC-30 and execute the SCP on the source computer.
Press the space bar to invoke the autobaud capability, which
automatically sets the baud rate for you. Set up the SCP to
communicate with no parity, eight data bits, and 1 stop bit. The SCP
should establish a straight-through serial communication link with
the EPC-30 COM1 port.