Keep in mind that analyzing a BIOS binary file and its delta requires a strong understanding of low-level programming, computer architecture, and firmware development.
In the Nintendo DS homebrew and modding scene, bios7.bin is sometimes the subject of delta patches for two reasons: bios7.bin delta
In software engineering, "delta" refers to the difference between two files. A "Delta Patch" is a file that contains only the changes, allowing a user to transform a source file into a target file. Keep in mind that analyzing a BIOS binary