User's Manual
![](/manual/ruggon/pm311b/user-s-manual-english/images/img-17.png)
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Using BIOS Setup Utility
Updating EC
Connect the PM-311B to the AC adapter to prevent a sudden loss of power.
1. Updating EC requires the use of the Internal Shell Command menu, refer to steps 1 to 12 of
“Updating BIOS”.
2. Enter the EC source le folder.
3. In the source folder, enter f.
4. Do not turn off your device or interfere with the reash process until the process is complete.
The system reboots once the process is completed.