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iPad 1 iOS 5.1 Custom ipsw :
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iPhone 4 GSM iOS 5.1 Custom ipsw file ACTIVATED:
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iPhone 4 CDMA iOS 5.1 Custom ipsw file :
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iPhone 3GS NEW bootROM iOS 5.1 Custom ipsw file ACTIVTAED:
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iPhone 3GS NEW bootROM (Baseband 06.15) iOS 5.1 Custom ipsw file ACTIVATED:
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iPhone 3GS OLD bootROM iOS 5.1 Custom ipsw file ACTIVATED:
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iPhone 3GS OLD bootROM (Baseband 06.15) iOS 5.1 Custom ipsw file ACTIVATED:
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iPod Touch 3rd gen iOS 5.1 Custom ipsw :
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iPod Touch 4th gen iOS 5.1 Custom ipsw :
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1- The custom ipsw is for iPhone 3GS OLD and NEW bootROM and for iPhone 4. Use redsn0w included to enter DFU mode or boot back tethered.
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4- If you get error 3194 then Delete sauriks server from hosts file in order to get rid of errors during upgrade. Open the file C:\Windows\System32\drivers\etc\hosts (Windows) or /etc/hosts (Mac OS X) and delete the following entry : 74.208.10.249 gs.apple.com
5- IF YOU GET ERROR 16xx :
1- use redsn0w or iReb to enter DFU mode
2- delete sauriks server from hosts file and then also after that CLEAR the DNS cache
6- After downloading and reading above step and understanding it then open iTunes (use newest iTunes 10.5 version)
7- Connect idevice to iTunes and BACKUP!! Make sure that you backup!! Because when upgrading using custom ipsw you will lose all data so backup and then go to next step.
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9- Now press SHIFT keyboard key + RESTORE button iTunes
10- Browse to the custom iOS 5.1 ipsw file you have downloaded and start restore process
11- To unlock open cydia and install ultrasn0w
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Semi-untethered means that you can boot your jailbroken tethered device without using computer or mac to reboot. in semi-tethered mode you will be able to use all the NORMAL idevice apps only you can't use cydia andcydia apps and tweaks to get back cydia work on your idevice you need redsn0w to boot your idevice in tethered mode then u can use cydia again. the benefit of using cydia semi-untethered tweak is that if you somehow don't have a PC or Mac to reboot your idevice then you can just reboot it normally and use iPhone NORMAL apps until you are at a place where you can use your PC or Mac and then reboot back using redsn0w in tether mode and use all cydia apps and tweaks !!
Step 1: Now, open Cydia > Manage > Sources.
step 2: Tap on Edit > Add and insert the following repository
http://thebigboss.org/semitether
Step 3: Search for SemiTether and install it then reboot your device.
