The short version
The Go2 has a rear reset button that looks like the obvious fix for a misbehaving robot. In a documented owner case, using it left the robot blinking green and unresponsive — and Unitree’s own support reply, quoted in the thread, was that the reset button “destroys the mother board (sometimes).” The outcome in that case: a motherboard replacement, free under warranty, with roughly three weeks of parts shipping.
Our advice matches the community’s: treat the reset button as if it doesn’t exist.
What a healthy factory reset looks like
Per the official manual: after a reset-button power-up, the head LED blinks yellow while the factory reset runs — about 30 minutes, and it needs at least 3 battery bars. If you (or a previous owner) already pressed the button: charge the robot, put it on flat ground, and give a yellow-blinking robot the full half hour before concluding anything.
If you’re stuck blinking green
A robot that blinks green and never becomes controllable after a reset attempt is the documented motherboard-failure signature. There is no user-side fix. Contact Unitree after-sales (support@unitree.cc) or your dealer, reference the reset, and expect a board replacement — covered under warranty in the documented case, but budget for weeks of turnaround.
What to do instead of resetting
Almost everything a reset “should” fix has a safer documented path: connection issues have a mode-by-mode checklist, posture problems have app calibration, and post-firmware app crashes are a service-settings toggle. Check those guides first — the reset button is the one move on this robot that can convert a software annoyance into a hardware repair.