There are three ways for R4/S9/T9 to restore factory settings.
1. Reset Restore (This method can be applied within 10 minutes when the miner boots.)
After powering on the miner for 2 minutes, please press "Reset" button for 5 seconds, then release it. The miner will be restored factory settings within 4 minutes and automatically restart. (no need to power off the miner)
Click Upgrade ---> Perform reset, then click “Ok” on the pop up window.
3. IP Reporter Restore (The miner will automatically revert to factory default firmware)
This method is only applicable to the miner as below. (The SD card slot of the miner should be on the left of Ethernet interface.
Usage: Please power off the miner, then hold down the IP Reporter and don’t release it. At the same time, please power on the miner. Releasing the IP Reporter after 5 seconds, the machine will automatically restore factory settings.
NOTE: This method is not applicable to the miner which has a SD card on the right of the Ethernet interface.