在MDK3.24下让ULINK与ULINK2共存调试ARM，同时也能作为mdk3.24版以上的crack-In MDK3.24 allow coexistence ULINK2 ulink and debug ARM, at the same time as above mdk3.24 version crack

ulink2 jtag programer (schematic + pcb + hex files)

详细介绍了Ulink调试M3过程，由安装到最终调试成功-Details Ulink debugging M3 process, from installation to final commissioning success

如何自制ULINK2,或者手动给ULINK2升级,可以参考这篇文章,这篇文章详细介绍了如何降级,说简单点就是把里面单片机数据擦除了再重新写你想要的版本-How homemade ULINK2, or manually to ULINK2 upgrade, you can refer to this article, this article details how to downgrade, that simple point is to erase the data inside the ch