Hi

Was this ever resolved? I am having the same issue on my a4 dominator, 3 cards refusing to has, 1 only hashes when connected by itself

Miner stats say same thing: Error getting version for 127.0.0.1:4028 ERR: socket connect(127.0.0.1:4028) failed

This is what cgminer says even with reflashed ...

I just got my A4 having same issues with lower hashrate. My firmware is V0.0.2(TF) Where can I get 2.0.3?

Sorry to be the bearer of bad news but you have a Batch 1 miner and you need a hardware update to move it to Batch 3 which will support the 2.0.3 software. Until you do this, the 2.0.3 ...

http://johnorben.com/wp-content/uploads/2017/05/A4_ProHashing_20170501.jpg
Current config as of 5/1/2017 11:00 am EST;
this configuration has been running stable for several hours.
Device reject .76% to 2.37%.

You're still running the 2.0.2 software. I suggest you move to 2.0.3 -- It has several ...