Unable to Install Update iOS? how to fix it

 

• Hard reboot, and then try installing the firmware again.
• If your smartphone has Jailbreak installed, update using iTunes.
• If you get error 1671 when updating via iTunes, then the software is downloading to your PC, try updating a little later.
• If the firmware was successfully installed, but the smartphone goes into a cyclic reboot, perform a restore via iTunes.

Click here to read in detail: https://repairbuy.in/blogs/error-while-updating-ios-what-to-do-and-how-to-fix-it/