Version 4.74 is often considered the "final stable frontier" of the classic MDK workflow. When Keil transitioned to MDK 5, they introduced a "Software Pack" mechanism which changed how device support was handled. While MDK 5 offered modularity, many developers preferred the self-contained nature of MDK 4.74, where device support for popular chips (like the STM32F1 series or NXP LPC families) was built directly into the installation.
When prompted to copy 'Startup.s' to the project folder, select . Debugging Note mdk-arm version 4.74
Navigating MDK-ARM Version 4.74: A Legacy Standard for Embedded Development Version 4
: Fully supports the ULINK2 USB Interface Adapter and ULINKpro for on-the-fly analysis, code coverage, and performance analysis. and performance analysis.