The below solution is for iPhone, iPad, iPod to bypass iCloud first then SIM unlock.

https://insanelyi.com/topic/20270-iphone-4-icloud-bypass-carrier-fix/

https://www.youtube.com/watch?v=2OYxxs1IqKc

What you need :

iphone4carrier Files :

TinyUmbrella :

ssh_rd_rev04b-iphone4-reva.jar :

Download all these to your desktop for easy access — DOWNLOAD FILES :

https://www.sendspace.com/file/b5r2x4

Lets begin :

1 : First thing we need to do is RESTORE the device to 7.1.1 , you said this is not possible ?

Enter DFU Mode :

Spoiler

Turn your iPhone off.

Hold down the Power and Home buttons simultaneously for 10 seconds (exactly).

Release the Power button but keep holding down Home until iTunes generates a message informing you that an iPhone in recovery mode has been detected.

While in DFU mode, your iPhone screen will be completely black.

If you see any Apple icons or logos, this means that your phone is not in DFU mode but recovery mode.

2 : Connect to iTunes and restore the device to : 7.1.1

3 : Upon Restore remove device from PC , do not let iTunes detect that its LOCKED.

Be sure there is : No SIM , No WiFi < —– very important.

4 : Launch Shh_rd_rev04b_iphone4-RevA.

5 : When Shh_rd has launched , connect to Localhost port 2022.

USER : root

PASSWORD : alpine

6 : Once Shh_rd loads the connection open the terminal window and run : Mount.sh

7 : Get to the ROOT and locate : mnt1/applications

8 : BACKUP the folder called : Setup.app (Just in case we need it later) once a backup is made go ahead and delete : Setup.app from the device.

9 : Go back another folder and copy the : mnt1 and mnt2 folders (Just a backup in case we need them)

10 : Restart the iPhone , it will boot up in : Recovery Mode , Use TinyUmbrella to kick the device from recovery mode.

You should now have BYPASSED , however ….. iTunes will still ask for Apple ID : SO DO NOT CONNECT TO ITUNES !!!

Very important that you do not connect to iTunes at this stage !!!!

NOW ……

11 : Again place the device in to : DFU Mode.

12 : Reconnect to the Shh_rd Tool and run : mount.sh (again).

13 : Navigate to : /mnt2/root/Library/ Place the Cache folder here.

14 : In the same folder as above , place the : Lockdown folder.

15 : Add the : device_private_key to the lockdown folder.

16 : Now navigate to : /mnt1/usr/libexec and place the lockdown folder here.

17 : Restart the device and iTunes should greet you with : Welcome to your new iPhone.

NO SIM YET !!!!

18 : Connect the device to your WiFi.

19 : Go in to the device settings Add your iCloud account.

20 : Send a Message to it from iCloud then erase/wipe device REMOTELY and then remove device from iCloud.

21 : iPhone will reboot in to : inactive state ….. Restore device to 7.1.1

22 : When restore is complete pop in your SIM and you should be set !!!