I just purchased my first Orange pi 4g-IoT board and have downloaded the Ubuntu distro from the official Orangepi.org site (https://drive.google.com/drive/folders/12ALlxN_EnXquMG4ieMMxP95LksAW-Pn8) . The zip file contains multiple image files 1)boot.img and 2)rootfs.img . I've tried copying those files files separately to my SD card (using Win32DiskImager) but have been unable to boot from SD card.
Can someone offer me some pointers on what I'm doing wrong? Do I have the wrong image? Thanks