Experimental Physics and
Industrial Control System

Michael Davidsaver via Tech-talk <tech-talk at aps.anl.gov> · Mon, 8 Feb 2021 09:32:11 -0800

On 2/8/21 6:37 AM, Abdalla Ahmad via Tech-talk wrote:
> Hello community
> 
> This question is not EPICS specific, but I could use some help. We tried downgrading the firmware for spare EVG and EVR boards which have the MRM firmware 005 I think to firmware E403 and D507 respectively. I followed the procedure in the manuals but when I issue the command "u" to start the update process, the telnet session exits with message "Self-programming triggered". I came back after a while and every time I telnet to the board, it seems the device entered a mode where no command is available (only q and x commands), sometimes when the device reboots, I try to dump the memory I get "Addr 0x8000002e: error -1".
> 
> I tried re-uploading the firmware, power-cycle, and factory settings but nothing works. Any advice how to fix the firmware update process?

Back when I was at BNL I was able to successfully update firmware on several
VME boards (I assume that's what you have).  I was always nervous though.

I can only recommend contacting MRF.  If you are lucky, and have access to
a JTAG programmer, you might be able to directly re-flash the firmware yourself.

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System