taken from the EPICS Tech-Talk mail exploder
162-Bug>lo 0 100000 ~$Local command? cat <your full path to vxV52>/vw/config/mv162/bootrom.hex away for 6 minutes 12 seconds !
What you type is the "lo 0 100000" and press return, then you enter the "~$" and it will ask "Local command?", you then type in what ever it takes to get the file listed and press return. Ex: "cat /<fullpathhere>/vw/config/mv162/bootrom.hex"
The upload will take a while and (if you use tip) will print how long thing took to complete. As you can see it takes about 6 minutes. After that you be able to press the return key and see the prompt again. If you see anything else... like "Overflow" messages, it did not work properly. You might try a slower baud rate or mess with the flow control options and start over.
162-Bug>pflash 100000 13ffff ffa00000 Source Starting/Ending Addresses =00100000/0013FFFF Destination Starting/Ending Addresses =FFA00000/FFA3FFFF Number of Effective Bytes =00040000 (&262144) Program FLASH Memory (Y/N)? y
This takes about 20 seconds and should return the prompt when complete. If you don't get the prompt back, something has failed, you should start over.
Your mv162 should now boot into the vxWorks startup prompt at 9600 bps the next time it is powered up.