Recovery_sd_s410.tgz -

: The "sd" in the filename indicates that this archive is designed to create a bootable recovery SD card. When a device's internal eMMC memory is corrupted or blank (a "bricked" state), the processor can be forced to boot from an SD card containing these specific files.

: A configuration file that tells the flashing tool how to divide the internal storage. recovery_sd_s410.tgz

: A utility script used to format an SD card and write the boot images to the correct sectors. : The "sd" in the filename indicates that