RocknRolla (2008)
The phrase points back to the early days of iPhone hacking. ZiPhone was a groundbreaking tool created by hacker Zibri in 2008. It allowed users to jailbreak, activate, and unlock the original iPhone and iPhone 3G with a single click.
Modern phone firmware has secure hardware roots of trust (like the Secure Enclave on iPhones) that prevent low-level modifications of the IMEI. ziphone imei change
Because IMEI changes are historically used to bypass carrier blacklists on lost or stolen property, possession or utilization of tools designed to alter an IMEI can be treated as a felony or high-level misdemeanor. The phrase points back to the early days of iPhone hacking