It looks like you’re trying to track down a specific installer for the legacy ARM Compiler 5 (Version 5.06 Update 7)

Migrating an entire enterprise-grade codebase from Arm Compiler 5 to Arm Compiler 6 is non-trivial. The two compilers use completely different front-ends ( armcc vs. Clang/LLVM). This means compiler switches, assembly syntax, inline assembly blocks, and pragmas are incompatible. For certified or strictly validated products, rewriting this code introduces unacceptable regression risks. 2. Functional Safety & Certification

According to ARM’s release notes (last published mid-2019), Update 7 addresses:

Arm Compiler 5.06 update 7 (build 960) is the final planned maintenance release for the legacy Arm Compiler 5 toolchain . It is available for download through the Arm Product Download Hub Download and Installation Official Download