Theta SC2 firmware not initiated on the camera

I started the normal process of upgrading the firmware from 1.71 to 1.82 from phone and later from my mac.
On both devices I receive the message that the firmware was transferred to camera and after turn the camera off and then on the firmware update will begin.
But nothing happens.
I tried on mac, on windows on iphone.
Any thoughts?

I have not encountered this before. You may want to try contacting official RICOH customer support.