The term "firmwareby" in the prompt implies the sourcing of modified firmware or tools from third-party sources. Users seeking MDM removal firmware for the CPH2557 should be aware of the following critical risks:
Add to /system/etc/hosts:
127.0.0.1 ota.coloros.com
127.0.0.1 cloud.oppo.com
After flashing MDM-removed firmware:
You should now see the normal Oppo setup wizard without any “managed by organization” message.
These are automatic system updates from Oppo. While they fix bugs, they can also:
Many advanced users prefer to remove or block OTA to maintain a stable, unlocked state.
Mobile Device Management (MDM) is a security software protocol used by organizations to control corporate devices. On the CPH2557, MDM manifests as:
While this sounds like a clean solution, using "MDM Remove" firmware carries significant risks, especially on the CPH2557: