Batch 2 ROId for Avalon who mined Batch 2 and then bought more chips to build and ship Batch 2 to the actual paying customers 7 weeks later and yes, then those customers ROIed.
Batch 3 got refunded, WHAT?? No one has ROIed on batch III yet.
I also received Batch 2 with April firmware and full of dust, so yes, i know. I always complained, (back when they first put of the first resistor&capacitor bs, but without success, everyone was still loving avalon for being the first to market).
About batch 3 you are right, sorry.