RSD Lite is a tool used to flash Motorola Devices with their stock ROM. If you want to unbrick and restore your device to warranty state or you just want to upgrade your Motorola device with an updated firmware (stock ROM) then this tool will help you do that.
RSD Lite is able to flash Stock ROMs with the following extensions
.xml – Fastboot files (very common)
.bzip, .gz, .tgz, .bz2, .tbz2 and .zip – Zip files
.hs and .HSX – Flex files
.shx and .SBF – Super files
RSD Lite 4.8
RSD Lite 4.9
RSD Lite 5.0
RSD Lite 5.3.1
RSD Lite 5.6
RSD Lite 5.6.4
RSD Lite 5.7
RSD Lite 6.1.4
RSD Lite 6.1.5
RSD Lite 6.2.4 (Some devices are not supported by this version)