Search engines will show you links to sites like CrackBerry , FileCroco , or BlackBerry World archives offering files named AntiTheftPro.bar or PhoneLocatorPro.bar . Before you download, understand this:
Do not download random .bar files from unknown mirrors. The risk of bricking your device or leaking data is higher than the chance of the app working.
When you wipe the device, the anti-theft feature kicks in. The phone knows it belongs to a specific ID. Upon reboot, it reaches out to BlackBerry’s servers to verify the user. If you cannot provide the email and password associated with that ID, the phone remains locked.
This means that generic "anti-theft file downloads" you find on sketchy forums are often malware, APK-to-BAR converters that crash, or old .bar files from 2013 that no longer communicate with dead servers.