cant get windows to format the image for booting it properly. Using Rufus 3.3 or Win32 Disk Imager 1.0 both load the sd card with the image file but it partitions the drive for 2 seperate drives. After changing the jumpers as per the guide and changing the mac address to match the one I was using nothing shows up on Angry IP scanner. The miner turns on with fans blazing and both led statuses stay lit up (Red & Amber)Windows 10 x64 Home Antminer S9 13.5TH model. Kinda stuck at this point.
Hi evilwar.
Don't know if I can help you, but as I also had som problems I'll try (discribed in earlier post).
- Download SD Memory Card Formatter from San Disk and format the SD card with the program.
- Extract the Braiins OS file package ones more on your harddrive.
- Start Win32DiskImager.
- Choose the SD.img from the folder you just extracted and the disk drive that shows you freshly formatted SD card.
- Press write.
- Change the mac addres in uEnv.txt on the on the SD card with notepad++ or similar.
Don't know if this does anything for you, but worked for me.
Regards.
Steff
So no luck this evening. 
I had my sd card with me and when I got to the miner it didn't fit. Seems like I need a Micro SD card that's usually found in mobile phones. If I got the time I'll go back tomorrow evening.
Off topic, but insted I put the Bitmain 23 oct LPM software in the miner for now and can confirm a drop from 1395W to 1220W with no noticable drop in hash rate. Temperatures also seems to be the same and fan speeds are lower than before (noticeably quieter). Maybe even a small increase in hash rate, but by tomorron night I'll have a more credible average. If I don't get the time to fix the Micro SD tomorrow at least I know if the decline in hash rate after time (reported in other threads) also applies to my miner as I probably won't get the time to try Braiins OS until next weekend.
BR.
Steff
I had my sd card with me and when I got to the miner it didn't fit. Seems like I need a Micro SD card that's usually found in mobile phones. If I got the time I'll go back tomorrow evening.
Off topic, but insted I put the Bitmain 23 oct LPM software in the miner for now and can confirm a drop from 1395W to 1220W with no noticable drop in hash rate. Temperatures also seems to be the same and fan speeds are lower than before (noticeably quieter). Maybe even a small increase in hash rate, but by tomorron night I'll have a more credible average. If I don't get the time to fix the Micro SD tomorrow at least I know if the decline in hash rate after time (reported in other threads) also applies to my miner as I probably won't get the time to try Braiins OS until next weekend.
BR.
Steff
Today I gave Braiins a try as hash rate in the LPM seemed to decline pretty much for me in 24 hours and the hash rate was also unstable in my opinion.
As there is more or less no profit for me mining with the S9 at the moment I don't really mind bricking it, so I played around a little with frequensies and voltages without really knowing what I did. I got awful results so i returned to square one.
As my chains seems to be pretty different (third one lagging really bad) I set the frequensies as Bitmains autotune did before, meaning 646, 642 and 606. Surprisingly the hash rate on each chain started to look normal.
Braiins suggested 9 V for chain one and two and 9.1 V for chain three. After this I rised each chain by 25 MHz and then once more, but the hash rate kept dropping.
So back to 646, 642 and 606. I then locked the voltages at 9, 9 and 9.1 and then rised the frequencies again on each chain first by 25 and then 25 once more. It started to look better.
I ended up with 9, 9.1 and 9.2 and frequensies 696, 692 and 656. Now chain one and two are almost the same, and three still about 400 GHs behind.
Before AsicBoost with Bitmain Autotune the S9 did avg. 13.6 THs at 1395 W. Now with Braiins, AsicBoost activated and with settings above it did 14.3 THs at 1350 W after running about 15 min. Probably needs a little more time to settle, but I had to go home by then.
First question about temperature. Before I had a maximum of 67 degrees celsius (chain 1). Now 83. However the fans seems to turn much slower than with Autotune, but I can't find any fan speed reading nor setting in Braiins. Are the fans running slower in Braiins and will they speed up automatically if the temperature goes higher? Can they be set manually by configuring some file on the SD card? 83 Is not too bad, but I think the temperatures would be pretty close to before if the fans also had the same speed as before.
Second question. I thought that higher frequency needs higher voltage, but Braiins recommends higher voltage the lower the frequency. How can this be?
Is 9, 9.1 and 9.2 too high to keep the voltage at and then still try to increase the frequensy by steps of 25 and see what happens? Do I dare to rise the voltage even higher?
So what to try to find the sweet spot (best THs/electric cost)? I need to sit down with the miner, with a six-pack, with lots of time and change a little at a time to see what happens. However if you have any thoughts about which way to go with voltages and frequesies they would be appreciated. If the S9 gets bricked it's all my own responsibility.
//Steff
