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He located the JZ (Jump if Zero) instruction right after the verification call. This was the gatekeeper. If the verification failed, the Zero flag was set, and the code jumped to the Shutdown routine. If it succeeded, it continued to the Run routine.

He wasn't going to rewrite the code. That was too risky. He just needed the result of the check to be 0x01 (True), regardless of what the server said. echannelizer license key work