Can you please indicate to us, which is the u-boot repository used for the s5p6818-lubuntu-desktop-xenial-4.4-armhf-20171212 image ? In Fire3 wiki it is mentioned an old one, the https://github.com/friendlyarm/uboot_nanopi2.git, which probably is not used. There are many branches in the dedicated u-...
Thank you @Maroon5
Also, what its the u-boot repository for this image ?
It is needed too.