This is because tools such as Red Sn0w and Sn0w Breeze are compatible with i OS 5 (for a tethered Jailbreak).
The only roadblock you may face when updating to the i OS 5 firmware is if you are trying to upgrade your unlocked i Phone to i OS 5.
Click the OK button; Now connect your i Phone 4/3GS to your computer, turn it OFF and click the Next button on Red Sn0w; Follow the on-screen instructions to enter DFU mode.
Also checkout our guide on how to put i Phone in DFU mode.
If you meet some problems during the updating process, this guide can help you: i OS 11 Update Problems and Solutions.
Maybe your computer does not recognize the firmware file.
23, 2017] Question: When updating or restoring i Device with i Tunes, an i Tunes window pops up and says, the i Phone/i Pad/i Pod touch could not be updated because the firmware is not compatible. Are you one of them, and have you gotten a way to fix it?
- A User from Yahoo Answers Many users have been stuck on the same situation mentioned above.
Backups include apps and app documents, preferences, contacts, calendars, messages and more.Red Sn0w brings the Restore feature to update i Phone i OS without updating the baseband.Baseband preservation is applicable to i Phone 4 and i Phone 3GS. Simply follow the Red Sn0w steps below to update your i Phone 4 and i Phone 3GS firmware without updating the baseband for unlocking.The method involves using Copy Trans Shelbee which is compatible with all i OS devices including the i Phone 7 and all i OS versions including i OS 10.Wan to update i Phone 4 or i Phone 3GS to update latest i OS without updating i Phone baseband to unlock it later using Ultra Sn0w or Gevey SIM? These are the steps to update i Phone 4 or i Phone 3GS to latest i OS firmware without updating the baseband.