Bitcoin Miner Firmware Flashing via the Browser
Three web flashers for the most popular open-source solo miners. No software installation required, bitcoin miner firmware flashing works directly in Chrome or Edge.
What firmware flasher do you need?
Select your device below. Each flasher is made for one specific family of miners and fetches firmware directly from the official repositories.
Bitaxe (Gamma, Supra, Ultra, Max)
Chip BM1370 / BM1368 / BM1366 / BM1397 Hashrate: 400 GH/s to 1.1 TH/s
For all single-chip Bitaxe models including the Gamma, Gamma Silent, Low Profile Plus, Supra, Ultra, Max, UltraHex, and SupraHex. Uses the official Bitaxe Web Flasher from bitaxeorg.
NerdQaxe (+, ++, OCTAXE)
Chip 4x BM1366 of 4x BM1370 (8x with OCTAXE) Hashrate: approximately 2 to 4.8 TH/s
For the multi-chip NerdQaxe family: NerdQaxe+, NerdQaxe++, and the 8-chip OCTAXE variants. Own flasher by shufps, fork of the Bitaxe Web Flasher.
NerdMiner (T-Display S3, v2)
Chip ESP32 / ESP32-S3 (No ASIC) | Hashrate: around 50 to 90 kH/s
For the NerdMiner T-Display S3 and NerdMiner v2 lottery-miners. Works without ASIC: pure CPU-mining for the chance of finding a block. Flasher from Bitronics.
Comparison: Which miner is right for you?
| Device | Type | Hashrate | Noise |
|---|---|---|---|
| Bitaxe Gamma | Single-chip ASIC | about 1.1 TH/s | Audible |
| Bitaxe Gamma Silent | Single-chip ASIC | approx. 1.0 TH/s | Quiet |
| NerdQaxe++ | 4-chip ASIC | about 4.8 TH/s | Audible |
| NerdMiner T-Display S3 | CPU lottery miner | around 80 kHz | Quiet |
No profit machines. The Bitaxe Gamma and NerdQaxe have a small chance of occasionally finding a block through solo mining or TIDES pools. The NerdMiner is pure lottery: extremely small chance, but an educational and quiet device.
How does bitcoin miner firmware flashing via the browser work?
Web flashers use the Web Serial API, a browser feature that talks directly to USB devices. This is how it works:
- You connect your miner to the computer via USB.
- You open the flasher in Chrome or Edge.
- The browser is asking for permission to talk to the serial port.
- The flasher downloads the firmware from GitHub and writes it to the device.
- The miner restarts with the new firmware.
No software installation, no command line. All communication goes through your own browser, the firmware comes directly from the official repositories.
Browser requirements for all flashers
The Web Serial API only works in Chromium-based browsers. Specifically:
- Works: Chrome, Edge, Brave, Opera, Arc, Vivaldi
- Not working: Firefox, Safari, Tor Browser
Do you have Firefox or Safari? Download Chrome or Edge and open the flasher there. For the NerdMiner flasher, an incognito window generally works best, as browser extensions can sometimes interfere with Web Serial communication.
Bitaxe Gamma next to a NerdQaxe++.
Frequently asked questions
Can I flash every miner with the same flasher?
No. Each miner family has its own firmware builds and therefore its own flasher. Bitaxe, NerdQaxe, and NerdMiner all use a different tool. Always use the correct flasher for your device.
Is this safe for my hardware?
Yes. A failed flash can almost always be fixed by re-flashing. Make sure the miner stays connected to power during the flashing process, and use a data USB cable (not a power-only cable).
Do I need drivers?
Sometimes. Most miners use a CP2102 (Silicon Labs) or CH340 USB-to-UART chip. On Mac and Linux, this usually works directly. On Windows, you sometimes have to install the driver manually if the serial port doesn't appear.
What if the flash fails?
Try again. Connect the miner to power AND USB, use a good cable, and flash again via the same flasher. A failed attempt will not damage the hardware.
Can I also update my miner via the web interface?
Yes, if the miner is already running on your network, you can do an OTA update via its own web interface. You primarily use the web flashers for the initial installation, factory reset, or if OTA updates don't work.
Is the firmware open-source?
Yes. All three projects (Bitaxe, NerdQaxe, NerdMiner) are open-source on GitHub. You can view, build, or contribute to the code yourself.
Not yet a miner?
View our offerings solo miners in the webshop. Or start with our Blogs about Bitaxe and NerdQaxe for background on open-source bitcoin mining from home.
Done flashing?
These miners ship from our own stock in the Netherlands, tested and delivered fast.
Bitaxe Gamma
€139.00
The most popular open-source miner: from playing along to real hashing.
View product
NerdQaxe++
€425.00
The next step after your NerdMiner: serious solo hashrate with the same open-source approach.
View product