1 build 3138 no newer firmware as of 52016if you needs are basic out of the box works greatbeen testing it for about 3 months and port forwardingmappingjust wont work it ends up forwarding a port range and i do not want thattesting done with dual dsl lines 12mbps eachcpu load seems to always be highneeded to deploy this to around 30 sites thinking twice about this router went to register this router on with peplink and its out of warranty