下载 Bitmain Antminer R4 官方固件。已列出 3 个版本，提供本地下载、硬件兼容范围、文件大小及 SHA-256 校验值。
固件与型号和控制板版本严格对应。升级前核对两者、备份设置、确保供电稳定，先测试一台矿机，且不要中断升级。错误镜像可能导致控制器无法启动。
ANTMINER-R4-xilinx-201811121649-autofreq-user-UBI-NF.tar.gz
SHA-256
81fc732125c586f44726e7f1f5eefcdf920d22d8d504f17d7ce0723020bba1b8MD5
94d6f3cee5bcc2b097e85046cbcbb7ad上传到矿机前请核对文件SHA-256。
MD5：94d6f3cee5bcc2b097e85046cbcbb7ad 1. Reduce power consumption. 2. Automatically abort the upgrade if the criterion is not met. 3. Please revert to the previous version if the miner is not stable after upgrade.
ANTMINER-R4-all-201704280718-autofreq-user-Update2UBI-NF.tar.gz
1. this is for R4 miner with support for 512MB or 1024MB memory on controller board. 2. Remove: post mac address and remote stop mining interface. 3. Fix a bug of memory leak 4. Support: keep config when upgrade. 5. Remove unused *.bitmain.com url string in binary file.
ANTMINER-R4-all-201704270142-autofreq-user-Update2UBI-NF.tar.gz
1. this is for R4 miner with support for 512MB or 1024MB memory on controller board. 2. Remove the functions: post mac address and remote stop mining interface. 3. Attention: this fw has been replaced to be same as ANTMINER-R4-all-201704280718-autofreq-user-Update2UBI-NF.tar.gz
来源核验于2026年9月14日