| Firmware name | Firmware | Type | Links | Notes | Tags | Verified |
|---|---|---|---|---|---|---|
| Bitmain Antminer stock firmware search: stock firmware, official firmware, firmware update, Antminer S21e XP Hydro (U3) firmware, Antminer S21e XP Hydro (U3) stock firmware, Antminer S21e XP Hydro (U3) custom firmware, Antminer S21e XP Hydro (U3) VNISH firmware | Bitmain Stock Firmware | Stock | official | Official download center; choose the exact miner type/model before updating. | asic;stock | 2026-02-04 |
| Braiins OS+ search: Braiins OS+, Braiins OS firmware, Braiins OS+ download, Antminer S21e XP Hydro (U3) firmware, Antminer S21e XP Hydro (U3) stock firmware, Antminer S21e XP Hydro (U3) custom firmware, Antminer S21e XP Hydro (U3) VNISH firmware | Braiins OS | Custom | official · evidence | Autotuning / power‑limit tuning; compatibility depends on the control board. | asic;custom;autotune | 2026-02-04 |
| LuxOS search: LuxOS firmware, LuxOS compatibility, Luxor firmware, Antminer S21e XP Hydro (U3) firmware, Antminer S21e XP Hydro (U3) stock firmware, Antminer S21e XP Hydro (U3) custom firmware, Antminer S21e XP Hydro (U3) VNISH firmware | LuxOS | Custom | official · evidence | Compatibility and remote‑install requirements depend on the control board and stock firmware. | asic;custom;enterprise | 2026-02-04 |
| BiXBiT Firmware search: BiXBiT firmware, BiXBiT firmware download, BiXBiT Antminer firmware, Antminer S21e XP Hydro (U3) firmware, Antminer S21e XP Hydro (U3) stock firmware, Antminer S21e XP Hydro (U3) custom firmware, Antminer S21e XP Hydro (U3) VNISH firmware | BiXBiT Firmware | Custom | official | Profiles/optimization; dev fee (as stated by the vendor). | asic;custom;autotune | 2026-02-04 |
| Braiins OS+ search: Braiins OS+, Braiins OS firmware, Braiins OS+ download, Antminer S21e XP Hydro (U3) firmware, Antminer S21e XP Hydro (U3) stock firmware, Antminer S21e XP Hydro (U3) custom firmware, Antminer S21e XP Hydro (U3) VNISH firmware | Braiins OS | Custom | official · evidence | Autotuning / power‑limit tuning; compatibility depends on the control board. | asic;custom;autotune | 2026-02-04 |
| LuxOS search: LuxOS firmware, LuxOS compatibility, Luxor firmware, Antminer S21e XP Hydro (U3) firmware, Antminer S21e XP Hydro (U3) stock firmware, Antminer S21e XP Hydro (U3) custom firmware, Antminer S21e XP Hydro (U3) VNISH firmware | LuxOS | Custom | official · evidence | Compatibility and remote‑install requirements depend on the control board and stock firmware. | asic;custom;enterprise | 2026-02-04 |
| BiXBiT Firmware search: BiXBiT firmware, BiXBiT firmware download, BiXBiT Antminer firmware, Antminer S21e XP Hydro (U3) firmware, Antminer S21e XP Hydro (U3) stock firmware, Antminer S21e XP Hydro (U3) custom firmware, Antminer S21e XP Hydro (U3) VNISH firmware | BiXBiT Firmware | Custom | official | Profiles/optimization; dev fee (as stated by the vendor). | asic;custom;autotune | 2026-02-04 |