Most carrier-locked Nokia 5320s forced an operator logo (Vodafone, AT&T, etc.) on the home screen. A patched RPKG ROM deletes the Provisioning.xml that enforces this.
RomPatcher was a legendary app created by developer Zorn. It allowed users to apply patches ( .rmp files) directly to the ROM (Z: drive) in real-time memory without permanently altering the firmware file. However, to use RomPatcher effectively, one often needed to "hack" the phone first. nokia 5320 rom rpkg patched
Happy patching!