Specifications
-Physical access to the BSC's serial console port. 
-A nine pin null-modem serial cable. 
-A laptop running a terminal emulation application such as Microsoft HyperTerminal. 
Components Used 
The information in this document is based on these hardware and software versions: 
-BSC-600/1200 running any software image. 
-A laptop running a terminal emulation application such as Microsoft HyperTerminal. 
In summary we will access the BSC via the serial console port. Using a laptop running a terminal 
emulation application such as Microsoft HyperTerminal we will attempt to interrupt the boot 
process to get to a CFE> prompt where we can manually switch partitions. If we can successfully 
boot to the alternate partition we can then perform an upgrade. The upgrade is applied to the 
alternate partition so it will repair the original partition. For further info on upgrades see BSC 
software upgrade documentation. 
1. Start with the BSC powered off. Connect a laptop with a nine-pin null-modem serial cable to 
the BSC's serial console port. Use a terminal emulation program such as Microsoft 
HyperTerminal (9600,8,none,1,none). 
2. Power on the BSC. Immediately begin to press control-c repeatedly until the interrupt in the 
boot process stops at a CFE> prompt. There is only a 2-3 second time frame for the interrupt 
from the time BSC is powered on. 
3. Assuming the current runtime is "A" perform the following to switch to the "B" partition: 
-At the CFE> boot prompt type setenv -p BSYS B then enter (setenv -p BSYS A to boot from 
the A partition) 
-Then type reset -sysreset -yes then enter 
-This will boot to the "B" partition. If your current runtime is B, replace B with an A in the 
setenv command. 
4. If you can successfully boot to the alternate partition you can then perform an upgrade. The 
upgrade is applied to the alternate partition so it will repair the original partition. For further info 
on upgrades see BSC software upgrade documentation.
My Certificate Authority requires a 2048 bit Certificate Signing Request (CSR). How can I 
generate a 2048 bit CSR on the BSC? 
Upgrade to the latest software revision. Software version 6.5.0.8 and greater allows you to select 










