Specific bootloader files for the M20 (often provided as .tar or .zip ) are used to update or downgrade the device's low-level software. A collection of these can be found in the haridhayal11 GitHub repository.
Are you trying to , install a custom ROM , or fix a boot loop on your device? m20-m30-bootloaders_and_modems/README.md at master Download M20 Loader zip
For users looking for alternative firmware like Project Sakura, various .zip releases for the Samsung M20 are hosted on SourceForge . General Flashing Instructions Specific bootloader files for the M20 (often provided as