This method works because boot.emmc.win is often just the raw block device. On many devices, the boot partition already a valid boot image starting at offset 0. But some OEMs add extra data at the end (e.g., Samsung signature footer). Manual dd can trim extra bytes.
: If renaming doesn't work, the file might be a compressed tar archive (often seen with larger partitions like system.ext4.win ). You can check this by opening the file with an archive manager like 7-Zip or WinRAR . If it contains folders and files, it is a tarball; if it appears as one solid block of data, it is a raw image. boot.emmc.win to boot.img
: On your device's internal storage or SD card, find the TWRP/BACKUPS/[Device_ID]/[Backup_Date] folder. This method works because boot
Use an extraction tool like (Windows) or The Unarchiver (macOS). Extract the contents of the archive. Manual dd can trim extra bytes
To flash your newly created boot image back to your device, boot your phone into Fastboot mode, connect it to your PC, and run: fastboot flash boot boot.img Use code with caution. 2. Rooting with Magisk