Pre release
# Common causes for failures. In priority order.
- SD card broken
- SD card faulty image
- SD card corruption
- Under sized power supply
- Under sized USB cables
- Faulty Raspberry Pi
- Corrupt firmware/EEPROM
# Intro
Raspberry Pi 1-4, Zero and Zero 2 models there is a blink pattern on the green LED that can indicate what is faulty.
Raspberry Pi 5 error messages can also been shown on HDMI 0.
## Raspberry Pi Act LED (green LED) Error Patterns
https://support.pishop.ca/article/33-raspberry-pi-act-led-error-patterns
## My Pi Won't Boot
https://support.pishop.ca/article/11-my-pi-wont-boot-red-light-only
##
https://support.pishop.ca/category/10-raspberry-pi-troubleshooting
## Corrupt firmware/EEPROM
Follow the "Updating the bootloader" instructions,
https://www.raspberrypi.com/documentation/computers/raspberry-pi.html#bootloader_update_stable