To truly remove MDM from the CPH2557, you need a package. This is distinct from an "OTA Update.zip" (which only patches existing files) or a "Payload.bin" file (which updates only system/vendor).
: Often requires using the device's Test Points to enter MediaTek BROM Mode for deep-level firmware flashing. Technical Context for CPH2557 Processor : The Oppo A79 5G oppo a79 5g cph2557 mdm ota remove firmwareby full
Enable Developer Options (Settings > About > tap Build Number 7 times). Toggle off Automatic system updates . To truly remove MDM from the CPH2557, you need a package
: A specific "MDM Remove" firmware file (often including a scatter file) is required to overwrite the partition controlling the lock. General Steps for Removal Backup Data Technical Context for CPH2557 Processor : The Oppo
These are instruction files used by flashing tools (like SP Flash Tool) to tell the program where to write specific parts of the firmware.