PSPKVM v0.5.1 Released: J2ME on the PSP
greg | February 28, 2009
Emulate Java ME on your PSP… M@x and Sleepper one up their J2ME virtual machine from 0.5.0 to 0.5.1.
Get PSPKVM and keep yourself entertained with a lasting collection of cellphone/mobile java games.
PSPKVM 0.5.1 changes:
- Enable input symbol in password text field
- Fixed OSK bug
- Fixed drawRGB alpha blending bug
- Fixed a couple of bugs inside VM interpreter
Download:
PSPKVM 0.5.1 (fw 1.50)
PSPKVM 0.5.1 (cfw)
- source: pspkvm
Comments (14)PSPKVM v0.4.2 Released
greg | September 21, 2008
The team who brought J2ME capabilities to the PSP has just released a new version of their KVM.
M@x and Sleepper have introduced select VFPU optimizations, FreeType2 font support, and a couple bug fixes.
PSPKVM v0.4.2:
- FreeType2 fonts support. (Please see “Running tips: Use FreeType2 font files” of Release Notes)
- Bug fixes:
- Mess display bug of NokiaUI for some games, e.g American Army.
- Fix PlatformRequest() issue of not launching Installer for Jad/Jar files.
- Add missing character in Chinese Input Method. Now full GB2312 charset is supported.
- Optimize alpha-blending of drawRGB() with VFPU instructions.
Download:
PSPKVM 0.4.2 (fw 1.50)
PSPKVM 0.4.2 (cfw 3.xx)
- source: pspkvm
Comments (8)PSPKVM 0.4.1 Released
greg | July 1, 2008
We’re back on the bug fix bandwagon… M@x and Sleepper, the two brains behind PSPKVM, have shared their small bug fix update in the form of version 0.4.1. Now enjoy J2ME compiled games & apps on your PlayStation Portable in a more stable manner.

PSPKVM 0.4.1 changes:
- Bug fixes:
- HTTPS connection always fail
- On Screen Keyboard fail to open
- Virtual Keyboard cannot input 4 and 6
- Input symbols and numbers while Chinese Input is open
- Improve performance of FileConnection InputStream.skip()
Download:
PSPKVM 0.4.1 (fw 1.50)
PSPKVM 0.4.1 (cfw 3.xx)
- source: pspkvm.com
Comments (33)PSPKVM 0.4.0 Released
greg | June 24, 2008
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.
We’re only hosting the full (all-in-one) packages. If you simply need to upgrade from a previous version, grab the appropriate package via the project’s sourceforge page.
PSPKVM 0.4.0 changes:
- Change package name and purpose of release bundles.
- pspkvm-bin-x.x.x-150-upgrade: Use this package if your PSP is 1.50 kernel and have installed pspkvm 0.3.2
- 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
- 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
- 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:
- Change key layout to be “QWERTY”
- Add some short-cut keys
- “Auto-open” property can be configured by pspkvm.ini
- Resolve some MIDlets not run problems:
- Super Action Hero
- Gmail 1.5.0
Download:
PSPKVM 0.4.0 (fw 1.50)
PSPKVM 0.4.0 (cfw 3.xx)
- source: pspkvm.com
Comments (7)PSPKVM 0.3.2 Released
greg | April 28, 2008
If ya didn’t know, that PlayStation Portable of yours is capable of running J2ME applications and games; the habit-forming ones typically found on cell phones and other such devices. Yeah, you know what I’m talkin’ about… All thanks to the magic of PSPKVM.
Much props to Sleepper & M@x for their continued work on PSPKVM.

PSPKVM v0.3.2 changelog:
- Virtual Keyboard support
- Use “L+R+Square” to call up network connection dialog at any time (slim version only)
- Add pspkvm.ini configuration file
- JSR75 root directories configurable by pspkvm.ini
- Stretch small device screen to fit PSP screen
- Support CW90
- Resolve bug: can not enter jad/jar file selector form, if the original jar file direcory is deleted
- Implement microedition.platform property. Now can run Cangshenlu.
- Don’t show mess icon in AMS
- Resolve the bug that can’t output voice in jstardict
Download:
PSPKVM 0.3.2 (fw 1.50)
PSPKVM 0.3.2 (cfw 3.xx — slim)
- source: pspkvm.com
Comments (6)PSPKVM 0.3.1 Released
greg | April 8, 2008
M@x and Sleepper have released an update for their K virtual machine port — PSPKVM version 0.3.1. Get down with a huge library of mobile Java apps & games on your PlayStation Portable.

PSPKVM 0.3.1 changes:
- Add JSR75(File Connection) support (Please read “JSR75 Tips” in Release Note)
- Minor optimization of draw_rgb
- Enlarge Java Heap to avoid OutOfMemoryError for some games
Download:
PSPKVM 0.3.1 (fw 1.50)
PSPKVM 0.3.1 (cfw 3.xx — slim)
- source: pspkvm.com
Comments (20)PSPKVM 0.3.0 Released
greg | April 2, 2008
Toss pspkvm 0.1.0a and pspME 0.2.1 into a pot; stir ‘em around, and what do ya got? You got M@x and Sleepper’s fully merged PSPKVM 0.3.0 — a virtual machine capable of running j2me applications/games on the PlayStation Portable.

PSPKVM 0.3.0 features:
- MIDP 2.0
- Nokia UI APIs (partial)
- WMA1.1(JSR120) stub
- Networking (By PSP’s WIFI)
- Java AMS with MVM supporting
- Several input methods: QWERTY/Abc/Symbol/…
- Directly browse and run from local jad/jar file, and auto-install without interrupting
- Jpeg support
- MIDI & Wave audio playback support
- Device emulation. You can choose device type to emulate for different screen sizes and key codes, either at installation time or from “Select device” menu
- Change default key assignment for specific application.
Download:
PSPKVM 0.3.0 (fw 1.50)
PSPKVM 0.3.0 (cfw 3.xx — slim)
- source: pspkvm.com
Comments (28)PSPKVM v0.1.0a: Play mobile java (j2me) games on the PSP *Updated*
greg | February 16, 2008
Update: Quick bug fix…
- Limited the heap size used by sound font to fix a crash bug.
Sleepper has released PSPKVM v0.1.0 — a JavaME VM capable of running mobile j2me apps/games on the PSP. Once you get the hang of PSPKVM’s control scheme, you’ll no doubt find games much more enjoyable than using your phone’s keypad — especially those still sportin’ the Nokia 3650.

To use: start PSPKVM and select a “.jar” file. The default device is the SE K800i; press Triangle to cycle through available devices. The last selected device will be loaded on the next boot.
Stay tuned for improved versions of PSPKVM; it’s said the author of pspME, M@x, will be merging his project with Sleepper’s in effort to provide a better Java Micro Edition Virtual Machine for the PSP.
Download:
PSPKVM v0.1.0a
PSPKVM source
- source: pspkvm.com
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