Over on https://www.axzez.com/forum/interceptor-carrier-board/40-pin-ffc-gpio (topic is closed or I'd reply there), I see that the FFC connectors expose I2C and some GPIO pins. I'd be interested in using them for some uses other than network interfaces. Could someone (@Bill Nagel perhaps?) post the pinout? Thank you!

I'm wondering if there is a way to put the CM4 into usbboot mode so I can update the bootloader and change the boot config on my CM4. From what I understand, this is usually done using the CM4 I/O board, by putting a jumper across some pins and connecting it to a computer over USB. However, I don't see anything similar on the Interceptor board. Is this possible to do, or will I have to purchase a CM4 I/O board in order to do this?