how to update your jailbroken iphone or ipad

First of all you must make a back up

Step 1

Download latest ios for you device from here

Step 2

Open your itunes and click on icon of your iphone or ipad

Step 3 

Click on update while holding shift (in windows) or alt (in mac)

Step 4

Navigate to the file you just downloaded and click on open or select

Step 5 

Then itune will start extracting ios file then you just have to wiat

Step 6 

There will be an error and update will stop and your iphone will be in restore mode 

dont be penic

again do step 3,4 and 5 

and this time your iphone will be update to latest version of ios 

Enjoy