: On your device's internal storage or SD card, find the TWRP/BACKUPS/[Device_ID]/[Backup_Date] folder.
command in Linux/macOS. A valid boot image usually starts with the magic string Try Unpacking : Use a tool like Android Image Kitchen boot.emmc.win to boot.img
boot.img is a standard boot image used by Android devices. It contains the Linux kernel and the initial RAM disk (initrd) used to boot the device. : On your device's internal storage or SD