sn0wbreeze We collect custom firmware on Windows - Without updating the modem!
We collect custom custom firmware 4.2.1 for iPhone 4, 3Gs Without updating the modem!
For 3G custom firmware is collected in a different way, here is described the way for 3Gs and iPhone 4. For 3G theme here
This version of sn0wbreeze-22r2 collects custom firmware without activation, and without Cydia
The theme for unattached Jailbreak (y) and installing Cydia for firmware 4.2.1 is Here
Before proceeding, read the entire FAQ!
Firmware without activation!
!! Ready custom firmware 4.3.3 for iPhone 4 , No modem upgrade, No activation, No Cydia (net) Download
!! Ready-made custom firmware 4.3.3 for iPhone 3Gs , No modem upgrade, No activation, No Cydia (net) Download (New bootrom)
!! Ready-made custom firmware 4.3.3 for iPhone 3Gs , No modem upgrade, No activation, No Cydia (net) Download (Old bootrom)
Ready custom firmware 4.2.1 for iPhone 4 download (firmware checksum md 5553bd09d8fc4494528f937306dcdcd00)
Ready custom firmware 4.2.1 for iPhone 3GS download (firmware checksum md 541c533772496249bb5716fe79fc02667
1. Run the program and click OK
In the appeared window click on the blue arrow below.
2. Click on Browse in the opened window, go to the location where you have the official firmware 4.2.1 and click on it.
If the firmware was downloaded by iTunes, then it is stored along the path;
- for Windows XP C: \ Documents and Settings \ username \ Application Data \ Apple Computer \ iTunes \ iPhone Software Updates
- for Windows Vista and Windows 7 Start \ username \ AppData \ Roaming \ Apple Computer \ iTunes \ iPhone Software Updates
3. Click on the blue arrow.
4. Select the Baseband Preservation Mode section and click on the blue arrow.
5. Expect about 3min while the custom firmware is going.
After the completion of the assembly, the custom-built firmware will be found on your desktop.
5. Click OK, and follow the instructions to enter the phone in DFU.
6. Enter the iPhone in DFU .
- Turn off the phone with both Home + Power keys, hold down the keys until the display turns black, the keys are immediately released.
- Clamp the Power key and count to 3x , after three seconds, immediately clamp the next Home key and immediately start counting up to 8m . Now you hold both keys clamped, as soon as you counted up to 8m, the top Power key is released, and Home continue to hold another 15s.
- Next, your phone will enter DFU mode, the display will remain black and empty.
- Launch iTunes on your computer, hold down the Shift key and hold on the keyboard, and click Restore in iTunes . In the window that opens, select your custom custom firmware. Good luck!
If you can not install a custom firmware and you constantly have errors, then to you here
And error 1600 means that your iTunes is not tasted, and you will not install it.