If you are blowing the 1A fuse, your power is not adequate or you have a faulty 360.
Yes the 360 circle and range rings will display when the unit recognizes the 360.
Units made since the 360 was first released have the 360 software. All Ethernet capable Helix units definitely have it.
You have to choose a 360 View to see 360. THEN you turn on the 360 with the 360 menu. It takes a while for the unit to recognize the 360 and give you a 360 view. The question has nothing to do with actually running 360.
Humminbird Helix 12 CHIRP SI, 1198c SI, 1198c SI, ONIX 10 SI NT, Helix 7 CHIRP SI GPS G2, SOLIX 12 SI, 360, RC-1