The Short Version
Amazfit released firmware 3.13.0.2 for the Cheetah 2 Pro, refining navigation, lactate threshold tracking, music controls, and workout screen readability.
Firmware 3.13.0.2 for the Amazfit Cheetah 2 Pro tightens the four things runners actually stare at mid-race: navigation prompts, lactate threshold readings (a measure of how hard your body is working before it starts to struggle), music controls, and workout screen text. No new hardware, no new price. Just a watch getting better at the job it already had.