I don't know what rock you live under, but the substrate contractor that made multiple revisions was less than intelligent, however management kept using him instead of replacing him until last revision(which didn't even happen if memory serves)
All the problems they had were due to crappy work and the shituation we are in is due to them trying to remake new/better revisions and just creating more problems... basically throwing our money away.
Of all the boards shipped and sierras shipped, i would assume around 90% failed due to power supply/damage from it going, the rest due to faulty board design, i can't image many boards are functional at this point.
The chips are just fine, they been proven to work on actual boards that were designed by someone with actual intelligence.
I'm not sure if you are trying to defend HF or point out why they failed so bad...
Did the HF customers decide to go with a bad substrate contractor? Or did management?
Most boards have failed because of cooling issues, not power supply. Is it a good design if cooling is so difficult?
What is the point of having a great chip if you can't get it to the end user in a working setup? I bought a miner, not a chip
And from what I ordered, the majority was never delivered. What did arrive, ran crippled and all but one board failed by now.
People like Edwardo, Simon, iCEBREAKER and cypherdoc lined their pockets and they are getting away scot-free
Which side are you on?