no firmware

One of my RBs reboots every couple days on its own. It handles a lot of wireless traffic in a ptp configuration. It reboots due to “kernel failure” according to the log. I suppose I should upgrade it to 2.9.19.

What is meant by it showing no current firmware? This is 2.9.11 with wireless-test and superchannel.

[admin@waldoboro] > /system resource print 
           uptime: 16h42m45s
      free-memory: 16180kB
     total-memory: 30456kB
              cpu: "MIPS 4Kc V0.10"
    cpu-frequency: 264MHz
         cpu-load: 63
   free-hdd-space: 84160kB
  total-hdd-space: 126976kB
[admin@waldoboro] > /system routerboard print 
       routerboard: yes
             model: "512"
     serial-number: "0ABC01DB572A"
  current-firmware: ""
  upgrade-firmware: "1.5"