Gather what you need¶

	Why
A microSD card, 1 GB or more (4 to 32 GB is typical)	the firmware lives on it. Use a new card and keep the one in the board as it is: going back is then a card swap
A card reader	to write the card
A mains USB charger	the board has two USB-C sockets; one goes to the charger. On a laptop's USB power alone the board can hang
A USB-C cable to your PC	the other socket: network at `192.168.2.1`, and a console
A 20 dB attenuator, before any transmit port is cabled to a receive port	the transmitter reaches about +19 dBm; the receiver survives +2.5 dBm
A PC	Linux for the devkit; Windows 10 or 11 can write the card with nothing installed

The cased board from the front, labelled: the ETH socket for Ethernet to your router, the DEBUG USB-C socket for console, JTAG and power, the microSD slot under the DEBUG socket, the USB USB-C socket to your PC at 192.168.2.1, and the 2 by 10 pin GPIO header (JP5) on top.

Where the card and the cables go.

Before anything transmits

Read before you transmit. Four rules, one page.

Next: put the firmware on a card.