Glossary

Terminology

Abbreviated	Full Names
OFW	Official Firmware
CFW	Custom Firmware
LCFW	Live Custom Firmware
HEN	Hombrew Enabler
CL	Custom Launcher
IPL	Initial Program Loader
cIPL	Custom Initial Program Loader
Perma-Patch	an exploit that can be executed during the boot-up sequence of the console, allowing to reboot into an `LCFW` immediately, essentially achieving the same as `cIPL` but generally slower to execute
pspemu	PlayStation Portable Emulator (PS Vita). Uses real PSP hardware for CPU and GPU with peripherals being HLE.
CEF (eCFW)	Custom Firmware for Vita's pspemu
ePSP	PS Vita's stock pspemu in PSP mode.
ePSX	PS Vita's stock pspemu in PS1 mode. Uses a modified version of POPS running on the Vita's built-in PSP hardware with sound emulation and screen upscaling handled by the native Vita hardware/software. It uses the same pspemu as ePSP, with a flag that changes its behavior when playing PS1 games.
vPSP	Adrenaline-patched pspemu with mixed PSP/PS1 mode. The Adrenaline patches makes it behave more similar to a real PSP, hence a true Virtual PSP.
POPS	PlayStation One Portable Station (PS1 emulator for PSP)
VitaPOPS	A modified version of POPS for the PS Vita. It is largely based on 6.60 with several changes, mainly related to sound emulation, now handled by the Vita itself since ePSP lacks the Media Engine coprocessor used by POPS on PSP to emulate sound.
UMD	Universal Media Disc
FTP	File Transfer Protocol
XMB	Xross Media Bar
VSH	Visual SHell
RIF	Rights Information Files
QCMA	Qt Content Manager Assistant
ms0	Standard PSP Memory Stick.
ef0	PSP-Go Internal Memory Card.
??0	question marks could mean ms or ef depending on PSP model.
ux0	Standard PS Vita Memory Stick.