Two methods
One: If you have another normal machine at hand, the steps are as follows:
1. Use a cable with small interfaces on both ends. USB cable (this cable is standard in the box), connect this button test machine to another normal machine, and both machines are powered on;
2. "Button test" machine , open any document;
3. Press the document key, 9: press the key to test, and press 1: exit the test mode. At this time, make sure that both machines are powered on and have power.
4. At this time, it will automatically exit the key test mode, and the machine will automatically restart.
2. If you have a computer with TI-Nspire software at hand, you can unlock it by sending a file through the computer. The steps are as follows:
1. Use a small port on one end and an ordinary USB cable on the other (this cable is also standard in the box) to connect the button test machine to the computer;
2. Open any TI-Nspire software on the computer and create a new document with the file name: Exit Test Mode.tns;
3. Press File-Save in the TI-Nspire software on the computer To the handheld device, find the Press-to-Test folder in the device and save it to this folder;
4. The machine in test mode will automatically restart and exit the test mode.