mkbootimg --header-ver 2 -i final-boot.img --dump
This is where the customization happens. Whether you are adding a custom kernel parameter to the header file or modifying an init.rc script inside the extracted ramdisk, ensure your text editor preserves Unix line endings (LF) rather than Windows line endings (CRLF). Mixing line endings will cause the Android initialization process to fail. Step 4: Repacking for Extra Quality bootemmcwin to bootimg extra quality
A standard boot image size usually ranges from 16MB to 64MB depending on the device architecture. If your converted file is significantly larger or smaller, review your extraction tool parameters. mkbootimg --header-ver 2 -i final-boot