iPad
http://appldnld.apple.com/iPhone4/041-0329.20110311.Cvfre/iPad1,1_4.3_8F190_Restore.ipsw
iPhone 4
http://appldnld.apple.com/iPhone4/041-0330.20110311.Cswe3/iPhone3,1_4.3_8F190_Restore.ipsw
iPhone 3GS
http://appldnld.apple.com/iPhone4/041-0328.20110311.Lkhy6/iPhone2,1_4.3_8F190_Restore.ipsw
iPod Touch 3G
http://appldnld.apple.com/iPhone4/061-8366.20110311.Fr45t/iPod3,1_4.3_8F190_Restore.ipsw
iPod Touch 4G
http://appldnld.apple.com/iPhone4/061-9588.20110311.GtP7y/iPod4,1_4.3_8F190_Restore.ipsw
Apple TV
http://appldnld.apple.com/AppleTV/061-9584.20110308.Cxdew/AppleTV2,1_4.3_8F191m_Restore.ipsw
Importante: bajar con Firefox para que tome la extension IPSW, si lo bajan con internet explorer le cambian la extension de .zip a .IPSW