amlogic-boot-fip/gtking at beelink · chewitt/amlogic-boot-fip · GitHub
^ These are the FIP files that I am using, which can be used to sign a mainline u-boot image. I built mainline u-boot using the VIM3 defconfig and the signing recipe from the N2. You can use the same process to write u-boot to eMMC as any other Amlogic device.
Thanks a lot, I appreciate your work .
Regards,