The internal flashing commands for Purism devices can be found here

A video showing how to properly connect a SOIC clip:

https://user-images.githubusercontent.com/827570/203147231-4791a1f1-bb9b-4373-9b4c-309bb3611c8b.mp4

A video showing how to automatize SPI chip detection upon correct SOIC clip connection:

https://user-images.githubusercontent.com/827570/203147643-528e9828-2666-4bd6-900f-3b915a11f633.mp4

Heads external flashing guides:

---

Table of contents

• Asus KGPE-D16
• Asus P8Z77-M Pro
• Lenovo T420
• Lenovo T430
• Lenovo X220
• Lenovo X230 Maximized
• Lenovo X230 Legacy
• Cleaning Intel Management Engine