ISO Antminer Z9 Mini CFW

[WhyFhy]

I cant seem to find good mirrors for fuddware.
These machines are zombies  But even stock at the moment they are profitable as of 11/19/2025 8am  @$619 usd, $ 0.10-12c kwh
Id like to mess with these again. I've had a couple on the shelves for years. would be cool to spoof the fans with some non pwm led fans. and drop the wattage.

[flapduck]

Z9 minis really are the cockroaches of Equihash, they just refuse to die. I've also got a couple that spent years in a box and every now and then I get the urge to resurrect them when the numbers look half-decent again.

Historically the Z-series images lived on Efudd's `releases.broked.net` and there's that old "Z9 series full and mini modded Efudd NO-DEV FEE 100%" thread where people re-hosted and stripped his remote-control / dev-fee logic. Worth digging through that rather than trusting random Google mirrors, because the original firmware had a ~3% built-in fee and fairly deep control over the miner baked in.

If you do flash anything, I'd SD-card backup and keep one unit on clean Bitmain firmware so you have a known-good recovery path.

[Smokeyz]

I too am interested in this, I have the older firmware that can you can mod it from the web inspect. I was able to SSH into and create a dump backup of the entire miner

[WhyFhy]

The firmware I'm on has virtually no workaround, Ive even encountered the Z9miniTestJig kit with no luck.

Miner Type   Antminer Z9-Mini
Hostname   antMiner
Model   GNU/Linux
Hardware Version   9.0.0.5
Kernel Version   Linux 4.6.0-xilinx-gff8137b-dirty #22 SMP PREEMPT Fri Dec 22 12:25:44 CST 2017
File System Version   Fri May 17 16:23:07 CST 2019
CGminer Version   4.9.0

---
flapduck I've been indexing and everything looking, even went to archive.org and pulled the TestJig @ bitmain and releases.broked.net , Only found z11 backups.

if you find that post and relay it , it would be much appreciated.

[Smokeyz]

The firmware I'm on has virtually no workaround, Ive even encountered the Z9miniTestJig kit with no luck.

Miner Type   Antminer Z9-Mini
Hostname   antMiner
Model   GNU/Linux
Hardware Version   9.0.0.5
Kernel Version   Linux 4.6.0-xilinx-gff8137b-dirty #22 SMP PREEMPT Fri Dec 22 12:25:44 CST 2017
File System Version   Fri May 17 16:23:07 CST 2019
CGminer Version   4.9.0

---
flapduck I've been indexing and everything looking, even went to archive.org and pulled the TestJig @ bitmain and releases.broked.net , Only found z11 backups.

if you find that post and relay it , it would be much appreciated.

I found this and used it to roll back from the "latest" locked at 500MHz firmware from bitmain to an older firmware
https://www.zeusbtc.com/articles/asic-miner-troubleshooting/1174-z9-v9-and-z9-mini-control-board-program-recovery

use this firmware file
https://file12.bitmain.com/shop-product/firmware/v9-SD%20Tools.zip

I know it says v9 but the z9 v9 and z9 mini are the same control board.

[Smokeyz]

The firmware I'm on has virtually no workaround, Ive even encountered the Z9miniTestJig kit with no luck.

Miner Type   Antminer Z9-Mini
Hostname   antMiner
Model   GNU/Linux
Hardware Version   9.0.0.5
Kernel Version   Linux 4.6.0-xilinx-gff8137b-dirty #22 SMP PREEMPT Fri Dec 22 12:25:44 CST 2017
File System Version   Fri May 17 16:23:07 CST 2019
CGminer Version   4.9.0

---
flapduck I've been indexing and everything looking, even went to archive.org and pulled the TestJig @ bitmain and releases.broked.net , Only found z11 backups.

if you find that post and relay it , it would be much appreciated.

I found some custom firmware

[WhyFhy]

The firmware I'm on has virtually no workaround, Ive even encountered the Z9miniTestJig kit with no luck.

Miner Type   Antminer Z9-Mini
Hostname   antMiner
Model   GNU/Linux
Hardware Version   9.0.0.5
Kernel Version   Linux 4.6.0-xilinx-gff8137b-dirty #22 SMP PREEMPT Fri Dec 22 12:25:44 CST 2017
File System Version   Fri May 17 16:23:07 CST 2019
CGminer Version   4.9.0

---
flapduck I've been indexing and everything looking, even went to archive.org and pulled the TestJig @ bitmain and releases.broked.net , Only found z11 backups.

if you find that post and relay it , it would be much appreciated.

I found some custom firmware

What did you find?
I still haven't had the time to go through that zeus guide, but I snagged that FW, I fear setting up v9 on sha256.
I have not messed with bitmain FW in like 8 years so Im out of the loop at the moment, will this automatically see what type of chain its looking for or is this versioned?