In the latest firmware upgrade from April 29th, they have multiple pool configs and also a way to CGminer configuration and more options. However, I am not sure how to play with this feature. Have you done anything with this blank column of cgminer configuration-more options?
Since Canaan finally gave us back the More Options entry field for the A1047, as with all Canaan miners there is ZERO need for 3rd party firmware/software. Now the only problem is finding what the command switches are and their ranges to use with the 1047. So far I have not been able to find that.
Historically the Avalon's have been very easy to tweak anyway you desire be it for temp control, speed, power efficiency, etc. Command switches for the A6xx-A9xx series can be found on Canaan's Github repository