New version Gevey turbo unlock sim card
fully unlock: 2G/3G GPRS/EDGE/3G STK iTunes
Will unlock iPhone 4G with:　
firmware 4.1 (baseband 02.10.04)
firmware 4.2.1 (baseband 03.10.01)
firmware 4.3(baseband 04.10.01)

Instructions

Step 1: Turn of your iPhone 4 and insert your SIM card and GEVEY SIM together with the metal SIM tray provided.

Step 2: Turn on your iPhone and wait for the SIM Welcome menu to show and then select accept.

Step 3: At the beginning a no service message will show on your iPhone. Do not do anything and wait until you see one signal bar appears on the top left corner.

Step 4: After you see the signal bar you dial 112and hang-up within 2 seconds.

Step 5: Turn on the Airplane Mode and then turn off right away. Your iPhone will show SIM Failure and then No SIM Card Installed.

Step 6: Until the No SIM Card Installed message shows up turn on the Airplane Mode again and turn it off right away again. The SIM Failure message will show and the signal will show up after a few seconds.

Your iPhone 4 should now be unlocked on baseband 02.10.04, 03.10.01