Update the corresponding firmware to solve the operating faults of Antminer S21, S21 hyd, T21 and other miners. By flashing the firmware and programming the correct operating procedures, you can effectively extend the service life of the miner and obtain more mining profits.
Miner model | File name | File size | Description | Publish date | Action |
| Antminer S21+ firmware | Antminer-S21+-release-202503121434.bmu | 15.58MB | MD5:38ff96b3d25f7e68e87b9408e59edc10 Updates： 1. Optimized firmware. Please make sure the miner type and firmware type are the same before upgrading the miner firmware. | 2025-04-05 | Download |
| Antminer S21+ Hydro firmware | Antminer-S21+-Hyd.-merge-release-20250219073020.bmu | 29.48MB | MD5:e3110ec460fb6507701765c34f1d20aa ANTMINER S21+ Hyd. initial firmware. Please make sure the miner type and firmware type are the same before upgrading the miner firmware. | 2025-03-03 | Download |
| Antminer S21 XP Imm firmware | Antminer-S21XPImm-Release-202502271608.bmu | 15.20MB | MD5:73367fc15fb10392970791c559982216 ANTMINER S21 XP Imm. initial firmware. Please make sure the miner type and firmware type are the same before upgrading the miner firmware. | 2025-03-28 | Download |
| Antminer S21e XP Hydro firmware | Antminer-S21e-XP-Hyd.-release-202501061507.bmu | 17.31MB | MD5:f17de768d5a84257ece9b91b7152c247 ANTMINER S21e XP Hyd. initial firmware. Please make sure the miner type and firmware type are the same before upgrading the miner firmware. | 2025-01-16 | Download |
Antminer S21 XP Hydro firmware | Antminer-S21-XP-Hyd.-release-202501061507.bmu | 17.31MB | MD5:f17de768d5a84257ece9b91b7152c247 Updates： 1. Optimized firmware. Please make sure the miner type and firmware type are the same before upgrading the miner firmware. | 2025-01-16 | Download |
| Antminer S21 XP firmware | Antminer-S21-XP-AML-release-202411051642.bmu | 15.21MB | MD5:4c16363cc2487de493ae0cc1cd9086d0 ANTMINER S21 XP initial firmware. Please make sure the miner type and firmware type are the same before upgrading the miner firmware. | 2024-11-18 | Download |
| Antminer S21Imm firmware | Antminer-S21Imm-AML-release-202408061155.bmu | 14.42MB | MD5:92f7f01581c49f0d3742b2ce4029d991 ANTMINER S21 lmm. initial firmware. Please make sure the miner type and firmware type are the same before upgrading the miner firmware. | 2024-08-12 | Download |
| Antminer S21 Hydro firmware | Antminer-S21-Hyd.-release-202405191051.bmu | 17.31MB | MD5:524dcfdced9927b89d28e637b100354a Updates： 1. Optimized firmware. Please make sure the miner type and firmware type are the same before upgrading the miner firmware. | 2024-05-22 | Download |
| Antminer T21 firmware | Antminer-T21-merge-release-20250126114837.bmu | 43.91MB | MD5:dcb5733c60113dd997d2db900ac42f0e Updates： 1. For the machines that may shut down due to high temperatures, some optimization strategies, such as frequency reduction, are implemented, which may cause a loss of computing hashrate. 2. Optimized the stability of mining machines under low ambient temperature conditions. Please make sure the miner type and firmware type are the same before upgrading the miner firmware. | 2025-02-18 | Download |
| Antminer S21 firmware | Antminer-S21-release-202502061718.bmu | 14.44MB | MD5:0584f958814460e33b343034e01b8c08 Updates： 1. Implemented slight frequency reduction and other optimization strategies for machines that may shut down due to high temperatures. 2. Enhance the stability of the firmware. Please make sure the miner type and firmware type are the same before upgrading the miner firmware. | 2025-02-26 | Download |
| Antminer S21 Pro firmware | FR-1.0(250327-S21-Pro).bmu | 15.22MB | MD5:9049c79433c1ea8f0bdffb2c7f7d6c72 Updates： 1. Optimized firmware. Please make sure the miner type and firmware type are the same before upgrading the miner firmware. | 2025-04-07 | Download |
Firmware download for SD card:
Miner model | File name | File size | Description | Publish date | Action |
| Antminer S21 firmware | S21-aml-flashcard.zip | 24.50MB | SD firmware for S21 AML control board. After flashing the firmware with the SD card, please upgrade to the latest official firmware. | 2024-02-26 | Download |
| Antminer T21 firmware | t21-flash-card-7007.zip | 27.11MB | T21 7007 Flash card package. | 2024-03-28 | Download |
| Antminer T21 firmware | t21-flash-card-aml.zip | 24.49MB | T21 amlogic Flash card package. | 2024-03-28 | Download |
| Antminer T21 firmware | t21-sd2nand-cvctrl-202403221534.tar.gz | 16.84MB | T21 cvctrl Flash card package. | 2024-03-28 | Download |
| Antminer S21 Hydro firmware | S21-hyd-flash-card-7007.zip | 27.13MB | S21 Hydro 7007 Flash card package. | 2024-04-09 | Download |
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