Crack the hood open to see ROM stickers? You can also read current FW for
backup. Instruments of this era usually have 27C series UVROM.
You can see ROM location on Image 22 here: https://xdevs.com/article/hp3457a/.
On February 15, 2018 9:28:30 AM GMT+08:00, "Dr. David Kirkby"
wrote:
>I've
I've got a 3457A, but I have no idea of the firmware version, as it does
not report it when it powers on. I guess there must be some way to find
out, but it was not obvious from a few minutes playing with the buttons.
Does anyone know how to find out, or if it can be upgraded? I've just paid
for c
