[Halld-controls] Fwd: 435NBX Firmware

[Brian Eng]

Here's the email I got from the NBX vendor about going back to an older firmware after upgrading to the latest one.

So it is possible, they just don't recommend it.

> Begin forwarded message:
> 
> From: Matt Puthoff <MPuthoff at rtaautomation.com>
> Subject: RE: 435NBX Firmware
> Date: July 21, 2016 at 11:08:32 AM EDT
> To: "'Brian Eng'" <beng at jlab.org>
> 
> We do have those older firmware available. But our engineers would rather not release those without a little bit of trouble shooting to make sure that it isn't out device causing the issue. Down the road with the older versions, they may encounter a problem with our firmware that was fixed in a later version.
> 
> We can get them to an older version of firmware, but we would just like to have the option to troubleshoot it. 
> 
> I would agree that it makes sense to update their firmware to the latest, as there are some bugs that we have found in older firmware that we fixed.