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...
That's very helpful! I reset mine back to the default Aug 9th firmware using that method and it's much better now. One board still isn't reading properly (45 of 63 chips), but if I downclock it enough (533mhz) the bad board gives me back about 1TH/s not quite as good as new, but at least it's helping. 5TH/s with one bad and one downclocked good board, vs 4TH/s with one 600Mhz good board.