This is especially true when it comes to jailbreak users and to i Phone owners who are relying in an unlock solution.
The latter is especially affected because a firmware update will update their baseband thus rendering their device unusable in terms of phone functions.
Today in this post, we’re discussing on how to how to update i Phone 4S to i OS 9 via 2 simple ways. Fully Backup i Phone 4/4s Before Updating If you want to update i Phone 4s to i OS 9, then prior to do so first ensure that you have made a complete backup of your i OS device.If not yet, you would require the recommended tool, i Skysoft Toolbox - i OS Data Backup & Restore to perform a full backup of your i Phone in just a few simple clicks.i OS 9 is currently available for i Phone 4s and models which came afterwards.You can also upgrade it for i Pad Air 2 and i Pad mini 2 and 3 efficiently.So, if you have an Apple device which is not compatible, you should stop then and there from making an upgrade as it may harm your device.
Plus, you should check and then upgrade your i OS device to the new OS version to avoid problems later on.
Would you like to answer one of these unanswered questions instead?
While updating to the latest i OS firmware does have quite a number of advantages, not everyone is willing to take the plunge as there are bound to be negative consequences.
Unlockers have been staying clear of updating to i OS 6 because it will update their basebands.
If you are someone who relies on an unlock, then you will be happy to know that the latest version of Redsn0w will enable you to update i Phone 4/3GS to i OS 6 while preserving baseband.
Released on 8th June, 2015, i OS 9 comes up with subtle design changes, improved functionality, refined features and performance enhancements.