Antminer R4 - dead hash board? Shitty design, read before you send it back

[captinkid]

This doesn't seem to work on the newest firmware, I haven't found a way to revert it, thankfully it was just on my test failed board unit.

Use caution if you upgrade the firmware now, because you might not be able to go back.

[Pyrojason]

This doesn't seem to work on the newest firmware, I haven't found a way to revert it, thankfully it was just on my test failed board unit.

Use caution if you upgrade the firmware now, because you might not be able to go back.

I found this a bit too late in the game - still I do not know a way to revert to firmware with custom tune instead of auto.
Why ever would ‘remove’ an option be the default !? JUST ADD OPTIONS DIMBITNITS!

[OgNasty]

My unit is still running great. I once had to warm it with a hairdryer before getting it started, other than that it’s been nice.

[Pyrojason]

Have you tried this? https://bitcointalk.org/index.php?topic=1597639.msg18267781#msg18267781

EDIT: I can confirm that it resets a R4 batch-6 back to BMiner v1.0 file system date Tue Aug 9 21:00:51 CST 2016.
It also resets all pool info back to Factory so you will have to re-enter it.

Good bit is: Auto-tune is GONE! IT GIVES BACK FREQ and FAN SPEED CONTROL!

To do:
Power off miner
Press and hold in the IP REPORTER button.
While holding the button in, turn ON the miner power
Continue to hold in button for 5-7 sec and release
Wait a few min an you should be able to re-enter your pool info.
Enjoy!

Caveat: Since it runs BOTH boards at the same freq, if one is er, weak, you would have to downclock the good one until the weak one is happy....
Or apply the correct R4 update and get Auto-tune back...

Thanks for this - Do you know if this technique works with the most recent firmware? Other comments suggested that the newest versions might disable that reset option. (Does anyone here even still have an R4 other than the most recent post about hairdryer revival method?)

[sarcheer]

I’ve got two running in my office which I bought used and applied this method to restore them both to factory. No idea when they were produced. Can say that neither were hashing at 8.7TH/s prior to the reset, but are hashing beautifully set at 612.

[Pyrojason]

I’ve got two running in my office which I bought used and applied this method to restore them both to factory. No idea when they were produced. Can say that neither were hashing at 8.7TH/s prior to the reset, but are hashing beautifully set at 612.

Excellent - I'll check if any of mine or my customers are able to do so as well.
I've successfully repair the burnt Pci-e connectors on many of these but some of them I think would benefit from a lower hash rate for sake of heat.

I also noticed in repairing a board that the unit came with two stickers - one showing a slightly lower hash rate on top. Is this from a refurb or just a misprint, I wonder.

After resetting yours, you mentioned it's running at 612 - do yours happen to appear to have multiple sets of hashrate stickers on the case as well?

[sarcheer]

Both machines have two sets of stickers on the case. I can say the boards on one have stickers for 600m. Both are below 85ºC chip temps oriented vertically in a 75-78ºF room. Consuming 908 watts at the wall with APW5.

[Pyrojason]

Both machines have two sets of stickers on the case. I can say the boards on one have stickers for 600m. Both are below 85ºC chip temps oriented vertically in a 75-78ºF room. Consuming 908 watts at the wall with APW5.

Sweet details! I tried the IP reset + power cycle option to no avail. I'll give it another go with some of the other techniques mentioned however I'm concerned the very latest firmware released may have removed the option. According to records, the miners with the 'sd card' slot to the left of the Ethernet port, which the R4 is one, should be able to be pushed back to factory firmware using the method of power off, hold IP reset, Power on while still holding and release five seconds later to set back. It didn't work on my 8.7 with that method but maybe I held it down for too long. (That shouldn't matter.. )

Thanks to all for the details shared in here. It's good to see support for this 'old' hardware. I buy used units for anyone wanting to liquidate. I also repair boards with the burnt PCI-E ports.