Aftermarket Firmware
Required for Loki Kit 120V Mining
Why Aftermarket Firmware?
Stock Bitmain firmware doesn't allow you to underclock miners enough to run on 120V power. Aftermarket firmware unlocks this ability, letting you:
- Lower frequency/voltage to reduce power draw
- Run industrial ASICs on standard 120V/15A outlets
- Fine-tune performance vs power consumption
- Often improve efficiency (J/TH)
⚠️ Aftermarket firmware may void your warranty. Always research compatibility with your specific miner model and control board before flashing.
Popular Options
Developed by Luxor Technology. Popular choice for Loki rigs and "Urlacher" builds. The dev fee is waived if you mine on Luxor Pool.
- Excellent underclocking support
- Clean web interface
- Actively maintained
- Good for S19K Pro and S21
Russian-developed firmware with powerful auto-tuning features. Popular in the home mining community for its efficiency gains.
- Automatic chip tuning
- Immersion cooling support
- Works with most S19 variants
- Fixed frequency mode for Loki
From the creators of Slush Pool (now Braiins Pool). Open-source base with premium features in OS+ version.
- Excellent auto-tuning
- Power target mode (set watts, auto-adjust hashrate)
- 0% fee if mining on Braiins Pool
- Strong community support
Quick Comparison
| Firmware | Dev Fee | Best For | Fee Waived |
|---|---|---|---|
| LuxOS | 2.8% | Loki/Urlacher builds | Luxor Pool |
| VNish | 2% | Auto-tuning, efficiency | No |
| Braiins OS+ | 2% (or 0%) | Power target mode | Braiins Pool |
For Loki Kit Users
If you're running a Loki Kit setup on 120V, you'll need firmware that supports:
- Fixed frequency mode - Set a specific frequency to keep power under 1200W
- Power limit - Some firmware lets you set a wattage cap
- Hash board spoofing - The Loki Kit tricks the miner into thinking all boards are present
Most Loki builds use LuxOS or VNish. Start at the lowest frequency setting, then slowly increase until you hit ~1200W at the wall.
Where to Get a Loki Kit
The Loki Kit is made by Pivotal Pleb Tech and sold through several retailers:
- Pivotal Pleb Tech (original creator)
- Altair Technology
- Nakamoto Mining
- D-Central Technologies (pre-built Loki rigs)