May have fried my 2008 Rancher 420es 4x4 battery jump starting with my truck

I left the truck off as that is what was suggested by a google search.
When the cables were connected and I turned the key in the atv, the dash lights came on as did the digital speedometer. It sat that way (like it normally would) until I hit the starter. It immediately made a pop noise and the dash lights all went out. Nothing would make them come on again. Obviously still wouldn't start.

I checked the fuses and none are blown.