AVR® In-System Programmer mkII is used for field upgrades of AVR Flash microcontrollers. The AVRISP mkII combined with AVR Studio® can program new AVR 8-bit RISC microcontrollers with ISP Interface.
The AVR Studio online-help contains the most current information and a complete list of supported devices.
AVR ISP mkII fix:
AVRISP mkII programmers manufactured from 20071012 to 20080130 has a missing parameter in the firmware. This causes the AVRISP mkII to not be able to communicate with the target AVR. The AVRISP mkII can be fixed by upgrading the firmware For procedure details see AVRISP mkII fix note.
Download upgrade package at http://www.atmel.no/beta_ware/as4/AVRISPmkIIUpgrade.exe.