Yep, I followed the old guide even with the new version - it worked fine, but I'm now using the correct values that you have (and were in the default asic-freq file as a guide). My firmware is Dec 12, 2013 actually since I went back one version to avoid the excessive beep/rebooting I was seeing (I have my Ants temporarily far away and sometimes they have difficulty with solid connections. After this week, I'll have them in a much better place and will be able to bump the firmware back to the most recent.
Good luck.
Just fyi... I have to reboot my Ant's about every 24 hours as I see xx's on the ASIC's. I'm sure it's just cosmetic (because the hash performance is fine) but I'm still babying these as they cost more than my old beat-up car, lol. I can connect to my Ant's from anywhere so reboot is very easy using the web interface.
You do not need to reboot on seeing an 'x', it is a display bug, just watch the share rate on the pool of your choice.