This is a NOS switch that I just purchased. I updated the FW using the configuration file (in 08030h, so FI08030h_Manifest.txt) through the console. All went well and I reset the switch. Problems started when I moved the switch from the bench to the rack. The above message shows up in the console, and it starts during boot (after the kernel has loaded). The error is preceded by stack messages.
I figured it was hardware when I finally saw the messages before the bootloader started.
I've contacted the reseller and will see how this can be resolved.
Note that if this would have been for a business critical function I would probably have bought from an official reseller at full pop. However, for what I needed (and for the amount of time I needed it), the deal was good enough for me to take a chance. Note that some manufacturers are more lenient than others (i.e. warranty their products no matter where it was purchased) and I do respect that it's not the case with Ruckus (likely to limit potential abuse), although I'm a bit disappointed.