Update: Dark_AleX is back with 4.01 M33 update #2. Download below.
Changes:

Nids resolver: Fixed scePowerGetCpuClockFrequency issue. This is the same bug that happened in 3.80 M33-1, it won’t happen again ¬¬
Fixes recovery problems that have apperared in prior version (incorrect position of back string in language others than english, enable, and disabled strings not translated in […]

The promised 1.50 kernel add-on for 4.01 M33 is here! This will allow you to run homebrew written for firmware 1.50.
Unfortunately, for PSP Slim users, this will only work with the original Phat PSP. To install, check the readme for instructions. In addition, you will need to download the official 1.50 firmware update, rename it […]

Zx-81’s PSPCAP32’s getting better and better with each update. This emulator allows you to emulate the CPC464, CPC664, and CPC6128 models on your PSP.
Changes:

Bug fix in CRTC emulation (games such as Prehistorik II just couldn’t be launched)
Two drives (A & B) are now supported, but only drive A can be used to automatically start a […]

Zx-81’s second update is version 1.0.2 of the recently released Vectrex emulator for PSP: PSPVE.
Changes:

Major speed improvements:

6809 emulation
vector rendering
remove vector cash (buggy and time consuming)

Sound emulation completely rewritten and inspired from 8910 driver of xmame.
The rotate 90′ view is now much faster and it is used as default render mode.
Save state modification, it is now […]

Zx-81’s been busy this past weekend to release a new version of PSPWrite, a text editor for PSP.
It permits to edit even huge text file, in both dos and unix mode, using iso8859-1 (8bits) characters encoding. All iso8859-1 characters are present in the “Danzeff like” virtual keyboard.
Changes:

New graphics based on hackePeter work
Add eboot’s music
The […]

You may not have heard of it before, but Zx-81 brings something new to the PSP: Vectrex. PSPVE is a port of the VecX emulator by Valavan Manohararajah.
It’s a first release, work still remain, the sound is really crappy, the rot90 render mode should be improved, the speed is not so good as well etc […]

Weltall’s back with yet another revision of CWCheat, the highly popular cheat device for PSP. Not only does this allow you to cheat on PSP games, but also on POPs (PSX-emulated) games using GameShark and Action Replay codes.
Changes:

[ALL] Fixed a timing bug which could lead to the dump function stop working after enabling the usb […]

If you recently updated to custom firmware 3.95 GEN, then it’s time to update, again. Miriam and the devs bring us CFW 3.95 GEN update #2.
Changes:

Fixed issue which crashed the PSP if you had vshmenu mode ‘None’. (if you have a GEN-1 pseudo-brick, change the vshmenu mode to fix it)
Fixed SNES emulator issues, now […]

Royale returns with a new version of PSP-Maps. This app, as the name implies, allows you to view maps on your PSP from various sources including Google and Yahoo! Maps.
Changes:

fixed Google Map views
added window title and icon for PC version

Download from Royale

PSPCAP32 is getting closer and closer to perfection with a new release by Zx-81! PSPCAP32 is capable of emulating the Amstrad CPC464, CPC664, and CPC6128 models.
Changes:

Major speed improvements, frame rate reached 55 fps at 222Mhz on startup and 67 fps at 266Mhz
Fix IR keyboard issue with fw >= 3.80 for FAT PSP
Add gzipped disk […]