iPhone Firmware Downloads

iPhone 4 Firmware Files.

• 4.0.0 (4): iPhone3,1_4.0_8A293_Restore.ipsw [Current]

3GS Firmware Files.

• 4.0.0 (3GS): iPhone2,1_4.0_8A293_Restore.ipsw [Current]
• 3.1.3 (3GS): iPhone2,1_3.1.3_7E18_Restore.ipsw
• 3.1.2 (3GS): iPhone2,1_3.1.2_7D11_Restore.ipsw
• 3.1.0 (3GS): iPhone2,1_3.1_7C144_Restore.ipsw
• 3.0.1 (3GS): iPhone2,1_3.0.1_7A400_Restore.ipsw
• 3.0.0 (3GS): iPhone2,1_3.0_7A341_Restore.ipsw

3G Firmware Files.

4.0.0 (3G): iPhone1,2_4.0_8A293_Restore.ipsw [Current]

3.1.3 (3G): iPhone1,2_3.1.3_7E18_Restore.ipsw

3.1.2 (3G): iPhone1,2_3.1.2_7D11_Restore.ipsw

3.1.0 (3G): iPhone1,2_3.1_7C144_Restore.ipsw

3.0.1 (3G): iPhone1,2_3.0.1_7A400_Restore.ipsw

3.0.0 (3G): iPhone1,2_3.0_7A341_Restore.ipsw

2.0.0 (3G): iPhone1,2_2.0_5A347_Restore.ipsw

2.0.1 (3G): iPhone1,2_2.0.1_5B108_Restore.ipsw

2.0.2 (3G): iPhone1,2_2.0.2_5C1_Restore.ipsw

2.2.1 (3G): iPhone1,2_2.2.1_5H11_Restore.ipsw

2.2.0 (3G): iPhone1,2_2.2_5G77_Restore.ipsw

2.1.0 (3G): iPhone1,2_2.1_5F136_Restore.ipsw

2G Firmware Files.

• 3.1.3 (2G): iPhone1,1_3.1.3_7E18_Restore.ipsw [Current]
• 3.1.2 (2G): iPhone1,1_3.1.2_7D11_Restore.ipsw
• 3.1.0 (2G): iPhone1,1_3.1_7C144_Restore.ipsw
• 3.0.1 (2G): iPhone1,1_3.0.1_7A400_Restore.ipsw
• 3.0.0 (2G): iPhone1,1_3.0_7A341_Restore.ipsw
• 2.0.0 (2G): iPhone1,1_2.0_5A347_Restore.ipsw
• 2.2.1 (2G): iPhone1,1_2.2.1_5H1_Restore.ipsw
• 2.2.0 (2G): iPhone1,1_2.2_5G77_Restore.ipsw
• 2.1.0 (2G): iPhone1,1_2.1_5F136_Restore.ipsw
• 2.0.2 (2G): iPhone1,1_2.0.2_5C1_Restore.ipsw
• 2.0.1 (2G): iPhone1,1_2.0.1_5B108_Restore.ipsw

Archive 2G iPhone 1.+

• 1.1.4: iPhone1,1_1.1.4_4A102_Restore.ipsw
• 1.1.3: iPhone1,1_1.1.3_4A93_Restore.ipsw
• 1.1.2: iPhone1,1_1.1.2_3B48b_Restore.ipsw
• 1.1.1: iPhone1,1_1.1.1_3A109a_Restore.ipsw
• 1.0.2: iPhone1,1_1.0.2_1C28_Restore.ipsw
• 1.0.1: iPhone1,1_1.0.1_1C25_Restore.ipsw
• 1.0.0: iPhone1,1_1.0_1A543a_Restore.ipsw

Source: http://ihackthatifone.com/firmware-downloads/