Stuck in startup "updating kindle"

view story

http://forum.xda-developers.com – Hey guys I'm a newbie here and I am probably way over my head but I have an issue. I did something stupid and edited some build props to try to get a game to work. Now when I start my kindle its stuck on "starting applications: updating kindle". Like I said I'm really new to all this rooting stuff and even just android products. I have a jailbroken iPhone 4 and I thought all this we b cool to try. I successfully rooted my kindle fire he 7 a few days back and was having fun with the play store but I got way over my head and now I'm stuck. I need to know how to restore or reset my kind (HowTos)