LG VX-8100

HI EVERY ONE, I NEED YOUR PLEASE HELP
I HAVE SOME QUESTIONS ABOUT THE 8100 PLEASE HELP
1- HOW AND WHERE CAN I FIND WHAT VERSION I HAVE ON
2- CAN I RECORD MORE THAN 15 SECOND VIDEOS

I WENT TO A VERIZON STORE TO GET THE V 6 AND THEY TOLD ME THAT THEY COULD NOT DOWNLOAD IT TO MY PHONE BECAUSE IT HAS FRIED SO MANY PHONES AND IT WAS NO GOOD
IS THIS TRUE SHOULD I STAY WITH THE V 4 IF I HAVE IT
THANK YOU

RJ