How to Fix 3 Major Problem on iPhone 5/5S by Re-installing Firmware

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In this article i will show you steps on how to fix your iPhone 5/5s (can restore jailbreak too!)
You want to do re-installing firmware/software if you have following problems:
 want to restore jailbreak (for resell) or
– to fix and remove lag or
– you have overheating problem

First of all… Backup your data into computer! For Prevent any undesired result such as error during update process that can causing hardware malfunction. 

Below are steps to re-install software/firmware for iPhone 5 or 5S:

1. Required files

-Latest Version or iTunes (you can download here { https://www.apple.com/itunes/download} )
-Laptop Windows (7/8/8.1 32/64bit) (Not Tested On Windows 10!) or MACBOOK or iMAC
(if you already using iMAC or MACBOOK, you don’t need download iTunes because it’s built in on iMAC and MACBOOK)
– IPSW File
For iPhone 5:
*Check your iPhone model on the back

reinstall iphone 5 operating system
For A1428 Model:
iOS 8.4: https://api.ipsw.me/v2.1/iPhone5,1/12H143/url/dl
iOS 8.3: https://api.ipsw.me/v2.1/iPhone5,1/12F70/url/dl
iOS 8.2: https://api.ipsw.me/v2.1/iPhone5,1/12D508/url/dl

For A1429 Model:
iOS 8.4: https://api.ipsw.me/v2.1/iPhone5,2/12H143/url/dl
iOS 8.3: https://api.ipsw.me/v2.1/iPhone5,2/12F70/url/dl
iOS 8.2: https://api.ipsw.me/v2.1/iPhone5,2/12D508/url/dl

For iPhone 5S:
For A1453 or A1533 Model:
iOS 8.4: https://api.ipsw.me/v2.1/iPhone6,1/12H143/url/dl
iOS 8.3: https://api.ipsw.me/v2.1/iPhone6,1/12F70/url/dl
iOS 8.2: https://api.ipsw.me/v2.1/iPhone6,1/12D508/url/dl

For A1518 or A1528 or A1530 or A1457 Model:
iOS 8.4: https://api.ipsw.me/v2.1/iPhone6,2/12H143/url/dl
iOS 8.3: https://api.ipsw.me/v2.1/iPhone6,2/12F70/url/dl
iOS 8.2: https://api.ipsw.me/v2.1/iPhone6,2/12D508/url/dl

*REMEMBER!!!
YOU CANNOT USE RANDOM IPSW FILE OR WILL GETTING ERROR!

2. Flashing/Installing firmware

First, turn off your iPhone into RECOVERY MODE

iphone 5 firmware
(Turn Off Your iPhone 5/5s, PRESS AND HOLD THE HOME BUTTON, Connect It To PC/Mac (Still Hold The Home Button) Wait For 5 Seconds, Until You See iTunes Logo, Release The Home Button)

3. On iTunes:

iphone 5 operating system

Press and HOLD “Shift” Button (For Windows) and HOLD “Option” Button (For Mac)
Then click on “Restore iPhone…” a window will pop-up

5 s iphone

Search for downloaded .ipsw and double tap on it!
Flash is Running, Wait For 10/15 Minutes (or untill it’s done)

iphone 5s jailbrake

Now, you have successfully upgrade or restore your iPhone just like the first time you bought! it can means no overheating, no lagging, no jailbrake.
Notes after re-installing iphone 5 or 5s firware
-If your device have jailbroken, it will loss
-If you have photos or videos, it will loss (depend on what option you choose, update or restore)
Update: will not losing data
Restore: will losing data (reset)

Sources:
iTunes https://www.apple.com/itunes/download
IPSW http://ipsw.me

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