What should I do, when press these three keys at the once, the screen stop and freezed

When needed to restart the XH Logger, long press and hold the 3 keys simultaneously to restart immediately. Before the device version older than V1.1.0.33, long press and hold the 3 keys simultaneously to

reboot. However, if short press the 3 keys and release it, the screen will freeze and no response even if connecting to the Data Logger Viewer software. In this case, reboot it again by correct operation. Long

press the 3 keys at the same time and hold until the system rebooting. Version newer than V1.1.0.33, the problem no longer ofcur when press the 3 keys at the same time, the system immediately rebooting.