Firmware upgrade for Bitcoin mining machines S4+, S5, S5+, and S7

1. Enter the background interface of the mining machine. The red circle in the figure below is the firmware version of the mining machine.

2. Click "Upgrade"  

3. Select firmware, click b, find the location of the firmware, select it and open it.
a is whether the configuration information is retained. If the check mark is removed, the mining machine will be restored to factory settings and upgraded during the upgrade.

4. Click "Flash image...", a dialog box will pop up, click "OK".

5. The mining machine starts to upgrade, which takes about 2 minutes. Do not turn off the power during the upgrade, otherwise the system files will be lost and the machine will not work.

6. Firmware download address: https://cnshop.bitmain.com/support.htm

7. Do not unzip the firmware after downloading it to your computer.

8. Download the latest firmware according to the model and computing power of your mining machine.
The corresponding computing power is written in the S7 firmware, as shown below.