Guys, I am new to PS Vita and I faced some problems and hope you all able to help me. And my unit is JP 3G+Wifi.

1.) My vita always go into shutdown mode after I press the power button. I need to hold the power button for 3 seconds to wake it up. This doesn't look normal because the psv should go into sleep mode instead of shut down. My game which is running also killed due to the psv shutdown itself.

2.) I can't connect to the content manager assistant despite I installed to CMA. It can't recognize by ps3 as well.

It's updated to version 1.67. But the problem still persists.