If you'd like to explore that use the Checkm8 exploit for a more stable bypass, or if you need help identifying your iPhone 5 model (A1428 vs A1429) for the correct firmware, let me know!
Custom Firmware is a modified version of the official iOS IPSW file. In the context of an iCloud bypass, a CFW is usually "stripped" of the Setup.app—the system application responsible for the activation screen. icloud unlock iphone 5 cfw ios 102 animetrickcom
Standard iTunes usually rejects modified firmware. Users often use tools like 3uTools, sliver, or specific SSH ramdisk scripts to flash the CFW. If you'd like to explore that use the