Changes

:A minimum 16 Gb class 10 memory card is recommended.

:Please refer to [https://www.raspberrypi.com/documentation/computers/getting-started.html#installing-the-operating-system Official installation tutorial]

:You can falsh OS into the eMMC if you use the CM4 '''with eMMC''', refer to the following step.

:1. Short OTG Pin, refer to the picture below.

:[[File:X515-IMG-5890-1.jpg|500px]]

:2. Connect Type-C OTG with a Type-A to Type-C cable to your computer

:3. Power the device via PWR Type-C with your 5V Power adaper

:4. Then rerfer to [https://www.jeffgeerling.com/blog/2020/how-flash-raspberry-pi-os-compute-module-4-emmc-usbboot this tutorial] to flash raspberry pi OS

:5. Remove the jumper of OTG after flashing is complete, then restart your device;

:'''PS：If you use CM4 with eMMC, then SD card cannot be used.'''