custom FIRMWARE (no Fee from mining!) for download

Antminer S9 is still profitable after Bitcoin Halving 2020. Download my Firmware fow Antminer S9 and you will have more efficient bitcoing S9 miners then anytime earlier.



Please donate any amount. It is all what you pay for it! This firmware is without any mining fee!


BTC Adress for Donating: bc1qfu6y0u2denshwy8lucn7q6t9mdhtyvmjucnavq

DONT forget add your your email in text transaction !



2) You will receive URL

After donating of any BTC amount you will receive open URL for downloading your Firmware

Donation first, Download firmware after 



3) Download and upgrade

After downloading the Firmware file you can instal it on your miner machine and Enjoy Best firmware ever without mining fee!



Specification of Firmware

for Antminer S9, S9i, S9j


  • Custom Firmware for: Antminer S9, S9i, S9j (all versions)
  • Bitmain Antminer S9 (12.5-13-13.5-14Th/s)
    Bitmain Antminer S9i (14-14.5TH/s)
    Bitmain Antminer S9j (14-14.5TH/s)
  • Version 2.3 - 2020-04-11!! (BigMiner Firmware without Fee from Mining!)
  • Efficiency: 40-45% (Better then Blissz firmware! Better then
  • UnOfficial Bitmain Firmware for Antminer S9, S9i, S9j noFee (From BigMiner)
  • Recommended, at your current firmware, set the miner frequency at 400mhz and set your fan speed manual at 25% before flashing.
  • Download the custom firmware. (dont unpack it)
  • Flash by going to "System" -> "Upgrade" -> "Flash new firmware image" and select the custom firmware.
  • After flashing, check the advanced settings page and start at the lowest voltage setting and 400mhz. From there increase your frequency to see how high you can go at the lowest voltage setting.
  • Start tweaking some more. See the profile suggestions below.


In case of any problems you can write to