iphone dev team (blog.iphone-dev.org)
iclarified (iclarified.com)
iphone firmwares (http://www.iphonefirmware.com/firmwares-download/)
sinful iphone repo (http://sinfuliphonerepo.com/)
hackstore (http://hackstor.blogspot.com/)
redmond pie (http://www.redmondpie.com/#)
)