S9i duplicate MAC address repair instructions

Note: This instruction only applies to S9i, not to S9.

1. Use a router and connect it to only one miner and one laptop or PC. The router can be wireless.

router connect miner and PC 

2. Use the bulk management tools to locate miners.

3. Enter the user interface and upgrade the firmware:


Antminer S9i upgrade failure 


(1) Before upgrading, make sure that the mining machine has been started normally;

(2) Only applicable to WINDOWS system, not applicable to other systems;

(3) Ensure that the computer and the mining machine are in the same network;

(4) When opening the software for the first time, the software requires network permissions and must be agreed upon;

(5) The upgrade process of the mining machine takes about 2 minutes, and the power cannot be cut off during the upgrade process, otherwise the system files will be lost, and the system will not work.

(6) After the upgrade, compare whether the MAC address has been changed. The address change indicates that the upgrade is successful.

(7) The machine with no problem does not need to upgrade the firmware.


S9i upgrade firmware 

4. When the miner restarts again, please use the bulk management tool to find the miner. You will find that the IP has changed. Please use the new IP to enter the user interface.

If you are still not able to solve the issue, please contact us for further assistance.

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