This article explains the process of resetting the Bedrock BIOS to default settings in case the If your Bedrock device is not booting due to some changes in the bios menus.
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BIOS menus, you can reset the BIOS to its default settings by following these steps:
Unplug the power supply from the device.
Take a sim SIM extractor pin and stick it in (or a similar small tool) and insert it into the hole beside to the console port until you feel the button click.
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Hold While holding the button pressed down and connect , reconnect the power supply to the device.
Wait for checkpoints to appear in the serial console, ~20-20 40 seconds.
You can hold the button indefinitely, however as long as you hold it, the device will keep rebooting this is expected behavior.
Release pressure from the button and let allow the device to boot up.
First time, it might take some time for the device to boot up due to DDR training.
By following these steps, you should be able to reset the Bedrock BIOS to its default settings and restore normal operation.