Hey guys - Recent issues have been happening with IOS 11 such as.. Random reboots, Lagging on springboard ( Home screen ) and quite a few of other issues. Here is a step by step way on downgrading your IOS firmware
1. Visit - https://ipsw.me/
2. Select your device
3. Press IOS 10.3.3 ( Only valid for a while )
4. And now it downloads.
5. Plug your device into your PC Or Mac
6. Open iTunes
7. Backup your device just in case ( Don't have too )
8. On the summary of your device, you will see - UPDATE or RESTORE DEVICE
9. You will want to ALT ( Mac ) Or Option ( PC )
10. Find the IPSW File
11. Double tap it and leave your device
12. Come back and you will see your device on IOS 10.3.3
PM Me for further questions if this did not work for you
1. Visit - https://ipsw.me/
2. Select your device
3. Press IOS 10.3.3 ( Only valid for a while )
4. And now it downloads.
5. Plug your device into your PC Or Mac
6. Open iTunes
7. Backup your device just in case ( Don't have too )
8. On the summary of your device, you will see - UPDATE or RESTORE DEVICE
9. You will want to ALT ( Mac ) Or Option ( PC )
10. Find the IPSW File
11. Double tap it and leave your device
12. Come back and you will see your device on IOS 10.3.3
PM Me for further questions if this did not work for you