It provides native support for older programming tools like the STK500 and JTAGICE mkII that may face stability issues on newer platforms. Critical Setup Tips
: The project wizard will guide you through setting up your project. You'll select: avr+studio+419+hot
А насчет 4 студии, под ней работает avr jtag mk2 на 5 6 они уже не поддерживаются, как врпочем и более дешовый клон avrICE. EasyElectronics.ru Studio 4.19 build 730 on Windows 10 - AVR Freaks It provides native support for older programming tools
The "hot" version everyone searches for is technically Build 730. This specific update brought several critical improvements to the table: avr+studio+419+hot