Many industrial machines and long-lifecycle medical devices were certified using MDK 4.74. Changing the development environment could require a complete recertification of the device.
Version 5 introduced .uvprojx files, while 4.74 used .uvproj . While there are migration paths, some complex projects with specific scatter files (memory maps) are easier to maintain in their native 4.74 environment. mdkarm version 474
Released during a transitional period for ARM development, version 4.74 was characterized by its stability and its role as one of the final "classic" versions before the massive overhaul seen in MDK v5. 1. The μVision4 IDE mdkarm version 474