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Fuzzyband is an application that can downgrade the baseband for iPhone 3G. Recently it has been updated to include the support for firmware 3.1.3 baseband 05.12.01. It works only with bootloader 05.08 (early iPhone 3G).

Why do users need to downgrade the baseband? The answer is simple: if they accidentally upgraded the new firmware and need to run unlock software (blacksn0w and ultrasn0w). Unlocked iPhones do not need Fuzzyband. iPhone 3GS users cannot downgrade baseband with Fuzzyband.

Fuzzyband is available for jailbreaked iPhones in Cydia (repository BigBoss, category “System” ).

Here are the direct download links for the latest iOS 7.x firmwares:

iOS 7.0.3:

• iPhone
  • iPhone 5 (Model A1428)
  • iPhone 5 (Model A1429)
  • iPhone 4s
  • iPhone 4 (GSM)
  • iPhone 4 (GSM Rev A)
  • iPhone 4 (CDMA)
• iPod
  • iPod touch (5th generation)
• iPad
  • iPad (4th generation Model A1458)
  • iPad (4th generation Model A1459)
  • iPad (4th generation Model A1460)
  • iPad mini (Model A1432)
  • iPad mini (Model A1454)
  • iPad mini (Model A1455)
  • iPad 3 Wi-Fi
  • iPad 3 Wi-Fi + Cellular (model for ATT)
  • iPad 3 Wi-Fi + Cellular (model for Verizon)
  • iPad 2 Wi-Fi
  • iPad 2 Wi-Fi (Rev A)
  • iPad 2 Wi-Fi + 3G (GSM)
  • iPad 2 Wi-Fi + 3G (CDMA)
• Apple TV
  • Apple TV 3G (AppleTV3,2): 6.0.1
  • Apple TV 3G (AppleTV3,1): 6.0.1
  • Apple TV 2G (AppleTV2,1): 6.0.1

iOS 7.0.2:

• iPhone
  • iPhone 5 (Model A1428)
  • iPhone 5 (Model A1429)
  • iPhone 4s
  • iPhone 4 (GSM)
  • iPhone 4 (GSM Rev A)
  • iPhone 4 (CDMA)
• iPad
  • iPad (4th generation Model A1458)
  • iPad (4th generation Model A1459)
  • iPad (4th generation Model A1460)
  • iPad mini (Model A1432)
  • iPad mini (Model A1454)
  • iPad mini (Model A1455)
  • iPad 3 Wi-Fi
  • iPad 3 Wi-Fi + Cellular (model for ATT)
  • iPad 3 Wi-Fi + Cellular (model for Verizon)
  • iPad 2 Wi-Fi
  • iPad 2 Wi-Fi (Rev A)
  • iPad 2 Wi-Fi + 3G (GSM)
  • iPad 2 Wi-Fi + 3G (CDMA)
• iPod
  • iPod touch (5th generation)

iOS 7.0:

• iPhone
  • iPhone 5 (Model A1428)
  • iPhone 5 (Model A1429)
  • iPhone 4s
  • iPhone 4 (GSM)
  • iPhone 4 (GSM Rev A)
  • iPhone 4 (CDMA)
• iPod
  • iPod touch (5th generation)
• iPad
  • iPad (4th generation Model A1458)
  • iPad (4th generation Model A1459)
  • iPad (4th generation Model A1460)
  • iPad mini (Model A1432)
  • iPad mini (Model A1454)
  • iPad mini (Model A1455)
  • iPad 3 Wi-Fi
  • iPad 3 Wi-Fi + Cellular (model for ATT)
  • iPad 3 Wi-Fi + Cellular (model for Verizon)
  • iPad 2 Wi-Fi
  • iPad 2 Wi-Fi (Rev A)
  • iPad 2 Wi-Fi + 3G (GSM)
  • iPad 2 Wi-Fi + 3G (CDMA)
• Apple TV:
  • ATV 2G: 6.0, 6.0 v2
  • ATV 3G: 6.0, 6.0 v2
  • ATV 3 New: 6.0, 6.0 v2

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Here are the direct download links for the iOS 6.x firmwares:

If you don’t know which firmware is for you, just check model number, which is written on the back side of the device and on the box.

iPad

• iPad 4 (Wifi iPad3,4; model A1458): 6.1.3, 6.1.2, 6.1, 6.0.1
• iPad 4 (Wifi+Cellular iPad3,5; model A1459): 6.1.3, 6.1.2, 6.1, 6.0.1
• iPad 4 (Wifi+Cellular iPad3,6; model A1460): 6.1.3, 6.1.2, 6.1, 6.0.1
• iPad mini (Wifi iPad2,5; model A1432): 6.1.3, 6.1.2, 6.1, 6.0.2, 6.0.1
• iPad mini (Wifi+Cellular iPad2,6; model A1454): 6.1.3, 6.1.2, 6.1, 6.0.2
• iPad mini (Wifi+Cellular iPad2,7; model A1455): 6.1.3, 6.1.2, 6.1, 6.0.2
• iPad 3 (Wifi iPad3,1): 6.1.3, 6.1.2, 6.1, 6.0.1, 6.0
• iPad 3 (Wifi+CDMA iPad3,2): 6.1.3, 6.1.2, 6.1, 6.0.1, 6.0
• iPad 3 (Wifi+GSM iPad3,3):  6.1.3, 6.1.2, 6.1, 6.0.1, 6.0
• iPad 2 (new gen iPad2,4): 6.1.3, 6.1.2, 6.1, 6.0.1
• iPad 2 (WiFi iPad2,1): 6.1.3, 6.1.2, 6.1, 6.0.1, 6.0
• iPad 2 (Wifi+GSM iPad2,2): 6.1.3, 6.1.2, 6.1, 6.0.1, 6.0
• iPad 2 (Wifi+CDMA iPad2,3): 6.1.3, 6.1.2, 6.1, 6.0.1, 6.0

iPhone

• iPhone 5 (iPhone5,1; model A1428): 6.1.4, 6.1.3, 6.1.2, 6.1, 6.0.2, 6.0.1, 6.0
• iPhone 5 (iPhone5,2; model A1429): 6.1.4, 6.1.3, 6.1.2, 6.1, 6.0.2, 6.0.1, 6.0
• iPhone 4S: 6.1.3, 6.1.2, 6.1.1, 6.1, 6.0.1, 6.0
• iPhone 4 (GSM iPhone3,1; model A1332): 6.1.3, 6.1.2, 6.1, 6.0.1, 6.0
• iPhone 4 (GSM iPhone3,2; model A1349): 6.1.3, 6.1.2, 6.1, 6.0.1, 6.0
• iPhone 4 (CDMA iPhone3,3): 6.1.3, 6.1.2, 6.1, 6.0.1, 6.0
• iPhone 3GS: 6.1.3, 6.1.2, 6.1, 6.0.1, 6.0

iPod touch

• iPod touch 5G (iPod5,1): 6.1.3, 6.1.2, 6.1, 6.0.1, 6.0
• iPod touch 4G (iPod4,1): 6.1.3, 6.1.2, 6.1, 6.0.1, 6.0

Apple TV

• Apple TV 3G (AppleTV3,2): 5.3, 5.2.1, 5.2
• Apple TV 3G (AppleTV3,1): 5.3, 5.2.1, 5.2, 5.1
• Apple TV 2G (AppleTV2,1): 5.3, 5.2.1, 5.2, 5.1

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Here are the direct download links for the latest iOS 5.1.1 firmware:

• iPhone 3GS
• iPhone 4 GSM:
  • 5.1.1 build 9B206
  • 5.1.1 build 9B208
• iPhone 4 CDMA
• iPhone 4S
• iPad 1
• iPad 2 WiFi
• iPad 2 WiFi+3G
• iPad 2 WiFi+CDMA
• iPad 2,4 (New iPad 2)
• iPad 3 WiFi
• iPad 3 WiFi+CDMA
• iPad 3 WiFi+3G
• iPod touch 3G
• iPod touch 4G
• Apple TV 2G
  • 5.0 (9B206f)
  • 5.0.2 (9B830)
• Apple TV 3G
  • 5.0 (9B206f)
  • 5.0.2 (9B830)

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Here are the direct download links for the iOS 5.1 firmware:

• iPhone 3GS
• iPhone 4 GSM
• iPhone 4 CDMA
• iPhone 4S
• iPad 1
• iPad 2 WiFi
• iPad 2 WiFi+3G
• iPad 2 WiFi+CDMA
• iPad 2 (unknown)
• iPad 3 WiFi
• iPad 3 WiFi+3G
• iPad 3 WiFi+CDMA
• iPod Touch 3G
• iPod Touch 4G
• Apple TV 2G (5.0.0)
• Apple TV 3G (5.0.0)

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Here are the direct download links for the iOS 5.0.1 firmware:

• iPhone 3GS
• iPhone 4 GSM
• iPhone 4 CDMA
• iPhone 4S (9A405), iPhone 4S (9A406)
• iPad 1
• iPad 2 WiFi
• iPad 2 WiFi+3G
• iPad 2 WiFi+CDMA
• iPod Touch 3G
• iPod Touch 4G
• Apple TV (4.4.4, 9A406a)

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Here are the direct download links for the iOS 5 firmware:

• iPhone 3GS
• iPhone 4 GSM
• iPhone 4 CDMA
• iPhone 4S
• iPad 1
• iPad 2 (WiFi)
• iPad 2 (WiFi+3G)
• iPad 2 (WiFi+CDMA)
• iPod Touch 3G
• iPod Touch 4G
• Apple TV 2G:
  • 4.4.0 (9A334v)
  • 4.4.1 (9A335a)
  • 4.4.2 (9A336a)
  • 4.4.3 (9A336a)

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Previous firmwares:

iPhone 2G (EDGE): 1.00, 1.01, 1.02, 1.1.1, 1.1.2, 1.1.3, 1.1.4, 2.0, 2.0.1, 2.0.2, 2.1, 2.2, 2.2.1, 3.0, 3.0.1, 3.1, 3.1.2, 3.1.3

iPhone 3G: 2.0, 2.0.1, 2.0.2, 2.1, 2.2, 2.2.1, 3.0, 3.0.1, 3.1, 3.1.2, 3.1.3, 4.0, 4.0.1, 4.0.2, 4.1, 4.2.1

iPhone 3GS: 3.0, 3.0.1, 3.1, 3.1.2, 3.1.3, 4.0, 4.0.1, 4.0.2, 4.1, 4.2.1, 4.3, 4.3.1, 4.3.2, 4.3.3, 4.3.4, 4.3.5

iPhone 4: 4.0, 4.0.1, 4.0.2, 4.1, 4.2.1, 4.3, 4.3.1, 4.3.2, 4.3.3, 4.3.4, 4.3.5

iPhone 4 Verizon: 4.2.6, 4.2.7, 4.2.8, 4.2.9, 4.2.10

iPod Touch: 1.1.4, 1.1.5, 2.1, 2.2, 2.2.1, 3.0, 3.1.1, 3.1.2, 3.1.3

iPod Touch 2G: 2.1.1, 2.2, 2.2.1, 3.0, 3.1.1, 3.1.2, 3.1.3, 4.0, 4.0.2, 4.1, 4.2.1

iPod Touch 3G: 3.1.1, 3.1.2, 3.1.3, 4.0, 4.0.2, 4.1, 4.2.1, 4.3, 4.3.1, 4.3.2, 4.3.3, 4.3.4, 4.3.5

iPod Touch 4G: 4.1, 4.2.1, 4.3, 4.3.1, 4.3.2, 4.3.3, 4.3.4, 4.3.5

iPad: 3.2, 3.2.1, 3.2.2, 4.2.1, 4.3, 4.3.1, 4.3.2, 4.3.3, 4.3.4, 4.3.5

iPad 2 Wifi: 4.3, 4.3.1, 4.3.2, 4.3.3, 4.3.4, 4.3.5

iPad 2 GSM: 4.3, 4.3.1, 4.3.2, 4.3.3, 4.3.4, 4.3.5

iPad 2 CDMA: 4.3, 4.3.1, 4.3.2, 4.3.3, 4.3.4, 4.3.5

Apple TV 2G: 4.1, 4.2, 4.2.1, 4.3 build 8F191m, 4.3 build 8F202, 4.3 build 8F305 (mirror), 4.3 build 8F455

Bootloader Images: 3.9 and 4.6.

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