I managed to get it to display two lines of zero sequences, but no text description of the result came up. The command prompt just closed. :/
I'm not understanding why this is a problem now... I was able to cycle MACs and do HomePass just fine under the old system until the new firmware change...
Command prompt won't just close if you run it from the Accossories menu! Just try once more, we really need the result for further improvements. MACCycle is dumb and pays no attention if MAC was successfully changed. So you're losing much time to get the same number of streetpasses. Let's go to PM, much handwork is required