[iPhone] another jailbreak question, can i jailbreak my iphone 4 to 6.1.3 ?

hi, i just bought an iphone 4 verizon
it comes with original firmware 4.2.6 (8E200)
its not jaibroken yet.
now i want to jailbreak it and upgrade it to iOS 6.1.2 is that possible ?
i know that newer iphones that uses A5 and above cant do this
but how about my iphone 4 verizon?
if this is possible, ca you guys teall me how to do it ? or at least point me to a thread or pages that shows how to do it ?

thank you.

Source: http://forums.macrumors.com/showthread.php?t=1615657&goto=newpost

Jim DeMint Dave Brubeck frankie muniz katt williams greg mcelroy bob costas bowl projections