We've fixed it! First I get the same message that you but after it we tried an older firmware version and it fixed it. ,This firmware works correctly and mining in antpool. Following was it:

https://s3.cn-north-1.amazonaws.com.cn/shop-bitmain/download/Antminer-S9-all-201708151137-autofreq-user-Update2UBI-NF.tar.gz

Be patient it takes more than one hour before minig!

Hi,

I bought an S9 with Bitmain APW PSU and I try to use it first time. After I plug it and setup the pool a see the system overview screen in my browser but the Hardware version and th BMminer version are empty. The miner status is also empty. I tried it many times and waited more, than 30 minutes but nothing changed. I also tried run it with the controller board pluged to PSU only and this way shows the same when all hash boards are in use. There is no CRC error according to kernel log and the red led is off and the green one always on. In the kernel log I've found a line which says "bmminer not found. Restart bmminer"

Does anyone has the same issue? Could you suggest a way to I fix it?