Unpacking and repacking U-Boot images part 2). The process is laborious but it COULD be automated and integrated into the doctor script. The copy patch itself can be safely redistributed as well. Unlike a typical patch, it was carefully crafted to not contain any part of either the "before" or "after" file. There's no IP inside the patch, which is why one has to go to the trouble of unpacking the uImage to get to the bytes that need to be merged.