Here is a breakdown of why that specific verification bypass on the H3600 (and similar ZTE hardware) is considered a landmark paper in embedded security research:
He began to type, composing a script not in the standard machine language, but in a low-level handshake code he hadn't used since the nineties. He isolated the jitter, identified it as a feedback loop from a faulty amplifier three miles away, and then wrote a patch for the H3600.