So that means, the update.scr file you where looking at is not the ready to run image for U-Boot. due to read or write issues with usb flash. It ensure that you can't update when the image has been modified unintendedly e.g. Beside commands the image can contain a kernel image, firmware images, rootfilesystem and many more.Īdditionally some metadata is contained like the architecture or whether the image is compressed and witch compression type is used.Ī checksum is build to ensure safety. As mentioned mkimage is a tool that creates images for the U-Boot Bootloader.
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