Compulab RPI4-IOTG configuration

Install OS

1. install rpiboot sudo apt install rpiboot
2. start sudo rpiboot
3. connect rpi to programming usb port, power on.

The device should become available as removable drive (lsblk)

flash with imager

use rpiimager to flash an image. Note: may hang for a long time on 99%. be patient.

flash with cli

Download image from https://downloads.raspberrypi.com/raspios_arm64/images/

wget https://downloads.raspberrypi.com/raspios_arm64/images/raspios_arm64-2026-04-21/2026-04-21-raspios-trixie-arm64.img.xz

Flash

xzcat raspios.img.xz | sudo dd of=/dev/sda bs=4M status=progress conv=fsync

compulab guide: OS installation

Add layers

Files to update system to Buster

Two options:

1. copy firmware to device. (partial config.txt and overlays)
2. install repackaged .deb overlay (untested)