SoftWareUpdater

Sony SoftWareUpdater is responsible for updating the PS4 to the latest version. It is located in PS4UPDATE.PUP as a SELF executable (orbis_swu.self). In some firmwares, a regular ELF executable may reside, alongside the SELF one.

ELF binary information

ELF 64-bit LSB executable, x86-64, version 1 (FreeBSD), statically linked, for FreeBSD 9.0 (900044), with debug

_info, not stripped

This is from Gen 1 Devkit Firmware, version 0.920.030.