Prepare the Mainboard

If the mainboard does not have any firmware, you need to install it for the first use

If you have just soldered the mainboard yourself, you will need to upload firmware once via USB. This is because without the firmware, the main Raspberry Pi won’t turn on.

For this, follow the Manual Firmware Installation guide.

Last modified May 10, 2023: docs: proofreading (ef620e5)