This also could explain why I coudn't get my miners hashing on nicehash either.
There is hope in the future:
Reserved for updates and FAQ
FAQ
1. Will S3 support p2pool?
The simple answer is we will. Bitmain has a very sincere interesting with p2pool, and we have invest human resource into this area. Sadly our firmware may not be able to give you a firm yes that we support p2pool right now, but we promise we will contribute much more to the p2pool mining idea than most of those who support p2pool mining well already.
Edit: AntMiners support p2pool. Static difficulty configuration recommended.
Since p2pool adjusts the difficulty frequently, therefore would bring hash rate loss when the difficulty changes at any time. As a result is that AntMiners' hash rate may be a little lower than that released officially when they are mining in p2pool.
We suggest you configure a static difficulty for AntMiner, when you mine in p2pool. Recommended difficulty is 256 or 512.
2. How to configure a static diff when AntMiner mines in p2pool?
Through Status->Miner Configuration, configure Pool Worker as 'BTC address/256+256' or 'BTC address+256'.
3. Will there be S1/S2 upgrade kit and what is your plan?
Yes, there will be upgrade kit for both S1 and S2 customers. But we need some time to design and test it. After we have finished the homework, we will announce the plan publicly.
4. Beeper rings randomly?
We set a beeper ring alert in the first version of firmware, to alert users when there is no immediate hashing work due to bad pool configuration.
However this alert will be removed in the later version of firmware.
Users can download new version firmware on July 25.
UPDATES
2014-7-8: The bulk PCB will be arriving tonight, and we will start first batch production tomorrow. First batch usually takes a longer time than later. We may ship the S3 -B1 on or before 14th.