Install iOS 7 Beta 1 with or without currently jailbroken! 100% Working NO UDID REGISTRATION.
For a link to the betas: http://www.filecenter.eu/?p=55
GSM - USES SIM CARD
CDMA - ALL OTHER CARRIERS
For info on getting your UDID registered for future reference, visit Http://iMZDL.com
Follow me on Twitter @JB_iPhone5