iPhoneOverdose.com

All original Apple iPhone firmwares are shown with latest version on top:

Apple iPhone 3GS

• iPhone 3GS Firmware version 3.1.3 (3.1.3/7E18):       iPhone2,1_3.1.3_7E18_Restore.ipsw
• iPhone 3GS Firmware version 3.1.2 (3.1.2/7D11):       iPhone2,1_3.1.2_7D11_Restore.ipsw
• iPhone 3GS Firmware version 3.1  (3.1.1/7c144):        iPhone2,1_3.1_7C144_Restore.ipsw
• iPhone 3GS Firmware version 3.0.1 (3.0.1/7A400):  iPhone2,1_3.0.1_7A400_Restore.ipsw
• iPhone 3GS Firmware version 3.0 (3.0/7A341):          iPhone2,1_3.0_7A341_Restore.ipsw

Apple iPhone 3G

• iPhone 3G Firmware version 3.1.3 (3.1.3/7E18):         iPhone1,2_3.1.3_7E18_Restore.ipsw
• iPhone 3G Firmware version 3.1.2 (3.1.2/7D11):         iPhone1,2_3.1.2_7D11_Restore.ipsw
• iPhone 3G Firmware version 3.1(3.1.1/7c144):            iPhone1,2_3.1_7C144_Restore.ipsw
• iPhone 3G Firmware version 3.0.1 (3.0.1/7A400):    iPhone1,2_3.0.1_7A400_Restore.ipsw
• iPhone 3G Firmware version 3.0 (3.0/7A341):            iPhone1,2_3.0_7A341_Restore.ipsw
• iPhone 3G firmware version 2.2.1 (2.2.1/5H11):          iPhone1,2_2.2.1_5H11_Restore.ipsw
• iPhone 3G firmware version 2.2 (2.2.1/5G77):             iPhone1,2_2.2_5G77_Restore.ipsw
• iPhone 3G firmware version 2.1 (2.1/5F136):                iPhone1,2_2.1_5F136_Restore.ipsw
• iPhone 3G firmware version 2.0.2 (2.0.2/5C1):            iPhone1,2_2.0.2_5C1_Restore.ipsw
• iPhone 3G firmware version 2.0.1 (2.0.1/5B108):       iPhone1,2_2.0.1_5B108_Restore.ipsw
• iPhone 3G firmware version 2.0 (2.0/5A347):             iPhone1,2_2.0_5A347_Restore.ipsw

Apple iPhone 2G

• iPhone 2G Firmware version 3.1.3 (3.1.3/7E18):        iPhone1,1_3.1.3_7E18_Restore.ipsw
• iPhone 2G Firmware version 3.1.2 (3.1.2/7D1):          iPhone1,1_3.1.2_7D11_Restore.ipsw
• iPhone 2G Firmware version 3.1 (3.1.2/7c144):          iPhone1,1_3.1_7C144_Restore.ipsw
• iPhone 2G Firmware version 3.1 (3.0.1/7A400):        iPhone1,1_3.0.1_7A400_Restore.ipsw
• iPhone 2G Firmware version 3.0 (3.0/7A341):            iPhone1,1_3.0_7A341_Restore.ipsw
• iPhone 2G Firmware version 2.2.1 (2.2.1/5H11):         iPhone1,1_2.2.1_5H1_Restore.ipsw
• iPhone 2G Firmware version 2.2 (2.2.1/5G77):            iPhone1,1_2.2_5G77_Restore.ipsw
• iPhone 2G Firmware version 2.1 (2.1/5F136):               iPhone1,1_2.1_5F136_Restore.ipsw
• iPhone 2G Firmware version 2.0.2 (2.0.2/5C1):           iPhone1,1_2.0.2_5C1_Restore.ipsw
• iPhone 2G Firmware version 2.0.1 (2.0.1/5B108):      iPhone1,1_2.0.1_5B108_Restore.ipsw
• iPhone 2G Firmware version 2.0. (2.0/5A347):           iPhone1,1_2.0_5A347_Restore.ipsw
• iPhone 2G Firmware version 1.1.4 (1.1.4/4A102):       iPhone1,1_1.1.4_4A102_Restore.ipsw
• iPhone 2G Firmware version 1.1.3 (1.1.3/4A93):          iPhone1,1_1.1.3_4A93_Restore.ipsw
• iPhone 2G Firmware version 1.1.2 (1.1.2/3B48b):        iPhone1,1_1.1.2_3B48b_Restore.ipsw
• iPhone 2G Firmware version 1.1.1 (1.1.1/3A109a):      iPhone1,1_1.1.1_3A109a_Restore.ipsw
• iPhone 2G Firmware version 1.0.2 (1.0.2/1C28):          iPhone1,1_1.0.2_1C28_Restore.ipsw
• iPhone 2G Firmware version 1.0.1 (1.0.1/1C25):           iPhone1,1_1.0.1_1C25_Restore.ipsw
• iPhone 2G Firmware version 1.0 (1.0/1A543a):             iPhone1,1_1.0_1A543a_Restore.ipsw

How to restore or update:

• Connect your iPhone to your PC
• Start iTunes (if it doesn’t automatically)
• Click ‘Restore’ while holding SHIFT key (PC) or option-click (Mac)
• A file dialog will open and let you choose the downloaded ipsw firmware file.