Several of the unbrick procedures, like this one that I’ve used several times, indicate how to push the “img” files (kernel.img, config.img, rootfs.img) files to three of the partitions. One just has to obtain one of the backup archive type files from one of the unbricking threads (the link previously posted in this post includes one). You just need to ignore most of the preceding stuff about partitioning and formatting so long as all the partitions are intact. Note use the correct “sdx” entry for your setup.
sudo dd if=kernel.img of=/dev/sdb5
sudo dd if=kernel.img of=/dev/sdb6
sudo dd if=config.img of=/dev/sdb7
sudo dd if=config.img of=/dev/sdb8
sudo dd if=rootfs.img of=/dev/md0
Once the hard drive is attached to one’s computer one can, if the user data partition (generally partition 4) is intact, still access their data and copy that user data to another hard drive.
