If you have already installed an earlier version of Sourcery G++ Lite for MIPS ELF on your system, it is not necessary to uninstall it before using the installer to unpack a new version in the same location. The installer detects that it is performing an update in that case.
If you are installing an update from a compressed archive, it is recommended that you remove any previous installation in the same location, or install in a different directory.
Note that the names of the Sourcery G++ commands for the MIPS ELF target all begin with mips-sde-elf. This means that you can install Sourcery G++ for multiple target systems in the same directory without conflicts.