NO NEED TO HAVE A DEVELOPER ACCOUNT NOR UDID REGISTRATION. http://www.youtube.com/watch?v=j4ef_O-iihQ
     
     
UPDATE: DOWNLOAD LINKS FOR iOS 7 BETA 2 NOW AVAILABLE (INCLUDES FINALLY IPAD & IPAD MINI)
-note: due to too much traffic, the download may get stuck at some point, just try again later
-note2: window users can open the DMG file with 7zip
    
iPad (4th generation Model A1458): http://j.gs/2JTR
iPad (4th generation Model A1459): http://j.gs/2JTV
iPad (4th generation Model A1460): http://j.gs/2JTY
iPad Wi-Fi (3rd generation): http://j.gs/2JT4
iPad Wi-Fi + Cellular (model for ATT): http://j.gs/2JSi
iPad Wi-Fi + Cellular (model for Verizon): http://j.gs/2JTj
     
iPad 2 Wi-Fi (Rev A): http://j.gs/2JU1
iPad 2 Wi-Fi: http://j.gs/2JT7
iPad 2 Wi-Fi + 3G (GSM): http://j.gs/2JSj
iPad 2 Wi-Fi + 3G (CDMA): http://j.gs/2JTc
     
iPad mini (Model A1432): http://j.gs/2JSl
iPad mini (Model A1454): http://j.gs/2JTA
iPad mini (Model A1455) http://j.gs/2JTI
     
iPhone 5 (Model A1428): http://j.gs/2JTz
iPhone 5 (Model A1429): http://j.gs/2JSh
     
iPhone 4S: http://j.gs/2JSm
     
iPhone 4 (GSM Rev A) (8 GB): http://j.gs/2JSw
iPhone 4 (GSM): http://j.gs/2JSp
iPhone 4 (CDMA): http://j.gs/2JU0
     
iPod touch (5th generation): http://j.gs/2JSk
     
     
DOWNLOAD LINKS FOR iOS 7 BETA 1 (use google chrome for best downloadspeed):
iPhone 5 (Model A1428): http://j.gs/2HGx
iPhone 5 (Model A1429): http://j.gs/2HGy
iPhone 4S: http://j.gs/2HGz
iPhone 4 (GSM Rev A): http://j.gs/2HH2
iPhone 4 (GSM): http://j.gs/2HH0
iPhone 4 (CDMA): http://j.gs/2HH4
iPod touch (5th generation): http://j.gs/2HH3
     
What device do I have?
http://theiphonewiki.com/wiki/Models
     
INSTRUCTIONS:
1) Download iOS 7 firmware for iPhone/iPad/iPod Touch from the links above, open the DMG file and put the IPSW file somewhere where you can find it.
2) Open iTunes and connect your iDevice via USB cable
3) Select your device from the left navigation panel on iTunes 11
4) Hold down the Shift (Windows) or Alt/Option (Mac) key and hit the UPDATE(!) button on iTunes
5) Browse and select the downloaded iOS 7 IPSW file. Let the restore process complete.
     
     
NOTE:
1) Be sure to backup your devices using iTunes 11 or through iCloud backup prior to installing iOS 7 beta.
2) You do not need an UDID registration to get IOS 7 beta on your iPhone 4 , 4s or 5, as of now.
3) once you have this beta installed every other beta will be OTA and as far as I know you would not need to worry about a bricked phone as the next ones will be just an update until the gold master
4) Do not use the button "restore" under iTunes, always use "Option" click Check for update (for Mac users) or "shift" click check for update on windows and select the .ipsw file manually that you have downloaded
5) The current version is buggy, and would restart few times in a day be prepared for that expect this to be corrected by beta 2 if Apple has noticed it.
6) if you do not like the update make sure you put your phone into simple DFU mode, check out this video to see how to downgrade from iOS7 to iOS 6.1.3 or 6.1.4. http://youtu.be/VpsXiBxzcqw