DO NOT UPGRADE your iPhone 3G to Firmware 2.2.1
Posted by Watson under Announcement, News, Uncategorized on Monday Mar 23, 2009
WARNING!!!
Apple came out Firmware version 2.2.1 in Feb 2009. There are many people upgraded their iPhone 3G to this version by purposely or mistakenly, and their iPhone can never be unlocked by yellowsn0w 0.98 (still the lastest version as of today 23rd March 2009) which only work for Firmware 2.2 Baseband 2.28.00.