Wrong gcc version in documentation
the "Download sources" page show gcc 10.2 download links while the scripts for boot loader builds uses 8.3. This gives file not found errors for gcc-8.3. Downloading gcc8.3 from arm developer website solves the issue. Recommendation to update documentation or the script to use matching gcc version https://gitlab.arm.com/arm-reference-solutions/arm-reference-solutions-docs/-/blob/RD-INFRA-2021.05.27/docs/infra/common/download-sources.rst