If you are using an "exclusive" APK (such as Pac File Extractor or similar dumper tools), follow these general steps:
Without promoting illegal activity, legitimate repair shops use PAC extractors to pull the nvram or persist partition to fix IMEI or FRP locks on older models where official tools are obsolete.
Kael’s heart hammered. He’d seen PAC files used for geofencing, for failover, even for ad-blocking. But this… this was a parasite hiding in plain sight, a logic bomb in a text file that every browser trusted implicitly.
This is where the enters the scene.
Disclaimer: Modifying firmware carries risks. Always back up your current system.