The most well-known online iphone hacking group the iphone dev-team just announced that the iPhone 4 has been unlocked by the updated ultrasn0w 1.0-1(via the official blog here).
Version 1.0-1 of ultrasn0w works for:
- iPhone4 baseband 01.59
- 3G/3GS basebands 04.26.08, 05.11.07, 05.12.01 and 05.13.04
(If ultrasn0w doesn’t show when you search Cydia, add the repo: repo666.ultrasn0w.com)