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ASIC firmware downloads / ASIC specifications

ASIC.TOOLS / FIRMWARE

Bitmain Antminer S9j (14.5Th) firmware

Official firmware versions matched to the exact ASIC model or manufacturer family. Local copies include SHA-256 checksums.

Bitmain Antminer S9j (14.5Th)
Firmware is hardware-specific. Match the exact model and control-board revision, back up settings, use stable power, test one miner first, and never interrupt an upgrade. A wrong image can make the controller unbootable.

Official manufacturer firmware

5 versions

Exact model Official source: BITMAIN Product Manual & Firmware ↗

VersionPublished / updatedCompatibilitySizeSHA-256Download
201907311617ANTMINER-S9j-xilinx-201907311617-autofreq-user-Update2UBI-NF-sig.tar.gz2025-05-29ANTMINER S9j41.5 MB3390e66780140a39b6e832bdaec7198db9976b9477acfcf3ec44359715e27716MD5: 6e39b03d80f0cc5d8b486ee7f76870baDownload local verified copy ↓Official source ↗
Release notes: MD5:6e39b03d80f0cc5d8b486ee7f76870ba 1. Enhance anti-virus capability 2.S9j user firmware. It is only for 7010 xilinx control board, not for C5 control board. 3.Secure firmware with signature, SSH port is closed. 4.You can't upgrade previous secure firmware after using this version.
201907302056ANTMINER-S9j-xilinx-201907302056-autofreq-user-Update2UBI-NF-sig.tar.gz2025-05-29ANTMINER S9j42.2 MB86ffeb46ed3a7e729002b28acce5f3c93e9936403c5e2dee11a54c52620989daMD5: 561c0f5441a99825e25b9c0c3521fff7Download local verified copy ↓Official source ↗
Release notes: MD5:561c0f5441a99825e25b9c0c3521fff7 1. Enhance anti-virus capability 2.S9j multi-option user firmware which provides the options that can increase the hash rate or decrease the power consumption. It is only for 7010 xilinx control board, not for C5 control board. 3.Secure firmware with signature, SSH port is closed 4.It is possible to damage the miner if you use a high frequency setting, and also please make sure the miner is in a good situation and the capacity of power supply is enough before you apply a over frequency setting 5.A small number of miners may have low hash rate and instability issue after over frequency. Please use lower over frequency option, or choose "Normal" option, or revert to the previous secure firmware version. 6.You can't upgrade previous secure firmware after using this version 7.Please read the instructions before using the firmware:https://support.bitmain.com/hc/en-us/articles/360023715154 *Please use the firmware in strict accordance with the operating instructions. If the machine is scrapped due to improper use, it will not be guaranteed according to the after-sale policy.
201811301411ANTMINER-S9j-xilinx-201811301411-autofreq-user-Update2UBI-NF.tar.gz2025-05-29ANTMINER S9j41.5 MBb940a507e36957b9a8ccbf20ae671e1cbb607da7c8123a962c9135228ccce3f0MD5: 95598a094dbc52bd8227cb049f73376eDownload local verified copy ↓Official source ↗
Release notes: MD5: 95598a094dbc52bd8227cb049f73376e 1. Not support C5 control board 2. Reduce hashrate and power consumption, better power efficiency 3. If the miner is unstable after upgrade. Please close Low Power Enhanced Mode or revert to the previous version
201811071118ANTMINER-S9j-all-201811071118-autofreq-user-Update2UBI-NF.tar.gz2025-05-29ANTMINER S9j61.0 MB56b2e1007d56c5a6fff994d07dcb4883f145ea088d777b284bcbdb2f62fabaf7MD5: 5ab21bac208a1ce18defabe615e2e197Download local verified copy ↓Official source ↗
Release notes: MD5:5ab21bac208a1ce18defabe615e2e197 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. 4. Fixed the hashrate dropping issue
201807131046ANTMINER-S9j-all-201807131046-autofreq-user-Update2UBI-NF.tar.gz2025-05-29ANTMINER S9j60.8 MB—Official listing; local copy unavailableOfficial source ↗
Release notes: Firmware for ANTMINER S9j

Verify the downloaded file with SHA-256 before uploading it to a miner.

Sources checked 14 September 2026