Pre-applying security bypasses so users could install unsigned .sis files without needing a "Certificate" (a major hurdle since the Ovi Store era ended).
By 2021 S60v5 ROMs were a niche, community-supported effort focused on preservation, minor functionality fixes, and hobbyist customizations. Practical real-world use was limited by security, app availability, and network compatibility; collectors and modders continued to maintain devices using archived firmware and specialized tools. symbian s60v5 rom 2021