After downloading from an official source:
: After installation, open Keil and navigate to Project -> Manage -> Project Items... -> Folders/Extensions . Click the "..." next to the ARM Compiler menu and use "Add another ARM Compiler Version to List..." to link the newly installed folder. arm compiler 506 update 7 verified download
: The "FuSa" or "for Certification" versions of Arm Compiler 5 are not compatible with Community, Essential, or Plus editions of Keil MDK. Most users should stick to the standard release. After downloading from an official source: : After