Recently, I upgraded my SNAP PAC controllers to firmware version R9.5a and enabled the RESTful server on my PACs. I've outlined the steps that I took in a blog post, and thought they'd be helpful to the OptoForums community interested in kicking the RESTful tires of the new firmware.
The instructions include how I used the new OptoTagPreserve to preserve my persistent variables before the download, and then again to reapply my persistents after the firmware upgrade.
Here's the link to the blog post: How I upgraded my SNAP PAC controllers...
Stay Calm and REST on.
Have fun! -Benson