targeted especially for the Chinese market with fully Simplified Chinese support, co-released with Palm OS 5.3. No device has been manufactured with this version up to now. Palm OS 5.0 Palm OS 5.0 was unveiled by the Palm subsidiary PalmSource in June 2002 and first implemented on the Palm Tungsten T. It is the first version to support ARM devices and replaced the Kadak AMX68000 kernel with the custom MCK kernel, named for its developer, that was written in-house by Palm. Applications written for the prior OS versions use the older DragonBall 68K instruction set and are supported via the Palm Application Compatibility Environment (PACE) emulator in Garnet. Even with the additional overhead of PACE, Palm applications usually run faster on ARM devices than on previous generation hardware. New software can take advantage of the ARM processors with small units of ARM code, referred to as ARMlets. With a more powerful hardware basis, Palm OS 5 adds substantial enhancements for multimedia capabilities. High density 320x320 screens are supported together with a full digital sound playback and record API. Palm's separate Bluetooth stack is added together with an IEEE 802.11b Wi-Fi stack. Secure network connections over SSL are supported. The OS can be customized with different color schemes. For Palm OS 5, PalmSource developed and licensed a web browser called PalmSource Web Browser based on ACCESS' NetFront 3.0 browser. Palm OS 5.2 is mainly a bugfix release, first implemented in the Samsung SGH-i500 in March 2003. It added support for 480x320 resolutions and introduced the new handwriting input system called Graffiti 2; the new input system was prompted by Xerox' lawsuit win against Palm. Graffiti 2 is based on Jot from CIC. The last bugfix release is version 5.2.8. Palm OS 5.3 Simplified Chinese Edition released in September 2003, added full Simplified Chinese support, further support for QVGA resolutions, and a standard API for virtual Graffiti called Dynamic Input Area. This version first shipped on Lenovo's P100 and P300 handhelds. Palm OS Garnet (5.4) added updated Bluetooth libraries and support for multiple screen resolutions ranging from 160x160 up to 480x320. It first shipped on the Treo 650 in November 2004. This version also introduced the Garnet moniker to distinguish it from Palm OS Cobalt 6.0. The last bugfix release is version 5.4.9. Garnet OS 5.5 dropped the Palm moniker and, , is the current version developed by ACCESS. This version is