PSPHacking

All credit goes to ogyounes and his sources.

Changes:
- Bug fix: vshmenu didn't let change camera mode due to camera_plugin using select button.
Fixed, now vsh menu will not be loaded when using the camera.

- Recovery can now be translated, See how below. Translation to spanish is autoincluded.
- Updated the M33 SDK with a new function and sample, and released the psp-packer tool to
compress prx's and PBP's in the ~PSP format.

- The folder of 4.01 and highre homebrew will be GAME4XX so it won't need change on update.

DownLoaD 4.01 M33 with 401.pbp

Smash your J2ME-enabled cell phone, you no longer need it. M@x and Sleepper return with a much-improved version of PSPKVM. Enjoy endless J2ME applications and games direct on your PlayStation Portable.

PSPKVM 0.4.0 changes:

• Change package name and purpose of release bundles.
  1. pspkvm-bin-x.x.x-150-upgrade: Use this package if your PSP is 1.50 kernel and have installed pspkvm 0.3.2
  2. pspkvm-bin-x.x.x-OE-upgrade: Use this package if your PSP is 3.xx OE kernel and have installed pspkvm 0.3.2
  3. pspkvm-bin-x.x.x-150-allinone: Use this package if your PSP is 1.50 kernel and haven't installed pspkvm 0.3.2
  4. pspkvm-bin-x.x.x-OE-allinone: Use this package if your PSP is 3.xx OE kernel and haven't installed pspkvm 0.3.2
• Source code package is no longer provided in release; Instead, you can grab source code from svn, tags are created for each release.
• JSR179 support (OE Version only). Currently support GPS290(Sony's USB GPS receiver) only, serial GPS will be supported in future Chinese Input Method. Please see "Virtual Keyboard and Chinese Input tips" in "Running tips" section of Release Note. Special thanks to Culiu for his contribution of Chinese Pinyin engine.
• Use Sony's On screen Keyboard as alternate input method. Default is off, turn it on in pspkvm.ini
• X/O swap in native dialog, configurable by pspkvm.ini
• Get device specific properties from pspkvm.ini. User can set properties (e.g "microedition.platform", or User-Agent value) for specific device
• Use HTTP proxy setting in network profile
• Add SonyEricsson Generic device profile in Device Selection
• Virtual Keyboard improvement:
  1. Change key layout to be "QWERTY"
  2. Add some short-cut keys
  3. "Auto-open" property can be configured by pspkvm.ini
• Resolve some MIDlets not run problems:
  1. Super Action Hero
  2. Gmail 1.5.0

Download:
PSPKVM 0.4.0 (fw 1.50)
PSPKVM 0.4.0 (cfw 3.xx)

Source : PSP Hacks

Just a little update. Watching how many people were asking for 4.00m33, it's interesting to make somethings clear.

Due to the lack of updates from sony (features), this new cfw will implement new changes that will make easier to work on the future ones, within some internal tools.

You'd have probably noticed some features of this new cfw that were told on french forums, but, to tell the truth, neither the savestates or the recovery on XMB or etc would at 100% probability be implemented at once (maybe later on m33-2, … etc)

Even though, recovery will be translated to spanish and you will be able to translate it to any other language without hex editing.

To sum up, main changes will come for compatibility and internal issues (with some functions to make life easier to the shells creators, launchment of an utility to compress prx's and pbp's, etc.)

It will be likely be done by the end of this week.

So there you have it, its likely it will be out by the end of the week.

Source:Alex`s Blog

Sony have released PSP Firmware 4.01, this minor update includes the following:

• Display of search results under Internet Search has been improved for certain languages.
• Playback of video content under Video has been improved for certain file types.

Playback has been improved for certain file types? Maybe Divx ?

 Download Via network update or here -> PSP Firmware 4.01