I just bought a Firefly rk3399 which could only be booted from emmc.
If you’d like to boot from SD card, please try Armbian.
Thank you for sharing such a positive and motivating article! The Professional-Cloud-Developer new exam camp exam was the turning point for my career and salary increase—get it for free today!
The article is written with great depth and has helped me solve many problems. Sharing the free F5CAB1 real question on the exam test questions—your key to career advancement and higher earnings!