Trying power off by a long power button press, it powers on normally.
Auto power off was set at 5 min.
Thanks all of you.
I could keep trying to get over incomplete menu hack.
model: E4 1.2L
Software: 2.3.0
After menu hack, measurement has 4 options: center spot, hot spot, cold spot, and no measurement.
Color has 5 options: Iron, Rainbow, Gray, Below alarm, and Above alarm.
Is 2.11.0 necessary to get more measurement and color options?
Or maybe I did some procedures wrong in hacking?