Why the 1.5 Firmware Sony Playstation Portable Handheld System is so cool.
		Here is a list of things you can do with a Sony PSP once you downgrade it to 1.5:
			1. You can play Amiga MOD music on it!! Yeah baby! This is the coolest feature. Once you run the MikMod player, you can store loads of songs (good Demoscene music that you don't hear on the radio) on even a 256MB memory stick and listen to them on the PSP portably. Another homebrew program, GameMusicEmulator, allows you to play soundtracks from games in their native formats, saving memory card space. There is also a non-digi Sid player that doesn't do subtunes. 2. You can play various old game systems on it using the emulators:The PSP is now a portable 8-bit NES which runs full speed, a Sega Genesis which runs at 30fps, a Sega Master System, a Super NES which runs almost full speed, An Apple //e, a 68k Macintosh in false color,  a Gameboy Advance which runs full speed (and has a backlight unlike the reflective screen of the original GBA), a Gameboy/Gameboy Color, a Windows 98SE computer that takes 15 minutes to boot and the mouse is very hard to use (just as a proof of concept, not the best as the Bochs emulator hasn't been updated in 364 days) 3. You have the Links2 Web browser: It can surf the web and it's much easier to type with rather than using the 2.0 firmware web browser. 3.5 If you still like the newer firmware, you can launch it and still have 1.5: DevHook lets you boot the newer firmware as if you flashed it, even though it doesn't damage the real flash memory. And yes, you can launch 2.0 firmware and use that web browser too. 4. The homebrew video player (PMP MOD AVC) gets more time to store movies per byte of memory card space than the built in media player: It even has full LCD resolution, so it looks perfect if you lower the compression ratio to the level of the built in media player. 5. If you have a wi-fi router on your PC, you can use the PSP as a wireless game controller (WifiGameController): Make Mario jump while in the other room, yes! 6. The PSP can also be used as a remote mouse and keyboard for your PC as well (PSP VNC Viewer). Drive your sister crazy by making the mouse go everywhere. Better yet, check up on that download on the PC in the bedroom while you make lunch in the kitchen. 7. It's the best mono sound recorder the RIAA doesn't want you to have (Audio Mechanica): It can record 44,100hz 16 bit mono sound once you wire up a microphone and the PSP has no motor noise. It records for about 3 minutes at this quality. 8. It's an infrared remote control (IR Commander/IR shell): You can use the IR port of the PSP to control infrared devices, provided you know the IR codes for the device. Another thing I haven't perfected is crafting the IR codes to send barcodes into the :CueCat reader wirelessly.
				UPDATE: They just cracked the 3.03 firmware, so I upgradeded to that version. I still have all these features above, plus a few new features (like visualization for the MP3 player, a video player that actually doesn't burn through a 1GB memory stick duo in a few minutes, limited Playstation 1 emulation)that came in the 3.03 anyway. So, 3.03 OE-C rocks too.
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