Zx-81 has rolled out a new version of PSP7800, a PSP port of ProSystem — the Atari 7800 game console emulator. This new version is compatible with firmware 3.XX meaning it can be used on the PSP slim.
Changes:

Compatible with custom firmwares 3.x and PSP-slim
Add a simple intro splash screen
Support iso8859-1 fonts in print text […]

Zx-81 has released PSP2600 v1.0.5. PSP2600 is a PSP port of version 2.2 of Stella, the Atari 2600 emulator. This new version is compatible with firmware 3.XX meaning it can be used on the PSP slim.
Changes:

Compatible with custom firmwares 3.x and PSP-slim
Add a simple intro splash screen
Support iso8859-1 fonts in print text functions (might be […]

Zx-81 has announced the release of PSPIRC v1.0.6, a basic IRC client for PSP.
Changes:

Add all iso8859-1 characters in danzeff virtual keyboard
All text fonts are now compatible with iso8859-1 characters
Bug fix in IR keyboard .ini files with UTF8 specification (for example mapping string such as “u+c3a0″ didn’t work properly)
New targus mapping with french characters mapped from […]

Well it seems we’re going to have to wait a little longer for M33’s next custom firmware release. Due to the OE sources leak, Sony was able to change some modules that were essential to M33’s custom firmware development.
Due to the leak (that we’ve always gone against this crime) of the OE sources […]

Although Zx-81 did mention that v3.2.1 was going to be his last contribution to the app, he decided to release a new version.
AFKIM (Away From the Keyboard Instant Messenger) is an instant messaging application for PSP written by Danzel.
Changes:

Add iso 8859-1 font/characters compatibility (useful for French, Spanish, German etc … )
Add modified version of Danzeff […]

You’ve probably heard about Datel selling a clone of the Noobz’s Pandora battery.
While Datel says, “Special TOOL version of our PSP battery works in exactly the same way as a standard SONY PSP battery but has the ability to put your PSP into service mode for custom firmware use,” Fanjita warns that, “You might have […]

Safari Al has released Super Mini Yoshi V3 (SMM Mod). Besides the SMM mod, 10 new levels have been added along with some other additional changes.
Changes to SMM:

Graphics: Changed Mario to Yoshi, and parts of the ground to Yoshi’s Island ground. The coins are now eggs.
Sounds: Brand New Yoshi’s Island sounds.
Levels: 10 new […]

AhMan is back and has ported Snes9xTYL 0.4.2 to firmware 3.XX making it compatible with both the old (fat) PSP and the PSP Slim.
Another emulator ported to firmware 3.x, aka for PSP Slim. The usb mass storage has been removed and no longer available due to the emu is now running completely under user mode. […]

AhMan, creator of iR Shell, has ported NJ’s CPS2PSP, CPS1PSP, NCDZPSP, and MVSPSP emulators to firmware 3.XX. This will make them compatible with the PSP 2000 (Slim).
The Ad-hoc versions have also been ported with their edited source codes available, too.
AhMan has only tested CPS2PSP, but the others should work fine.
Release Thread
[Source: AhMan]

Team M33 has released a new PSARdumper for 2.XX and 3.XX kernels. Now we can decrypt all firmwares up to 3.71 (and future 3.7X firmwares)!
Additionally, you no longer need to extract the DATA.PSAR to the root of your memory stick. All you need to use is the EBOOT.PBP for the firmware you are […]