1) Insert the desired SIM card you want to use unlocked into your device, and restart the phone.
2) Enter the code *#197328640# into the keypad and press send.
3) Go to Main Menu -> [1] UMTS -> [1] Debug Screen -> [8] Phone Control -> [6] Network Lock -> Options [3] Perso SHA256 OFF (after choosing this option, wait for at least 30 seconds)
4) Go back one step by pressing the Menu button, select back, which should bring you to [6] Network Lock, then choose [4] NW Lock NV Data INITIALLIZ.
If you followed the above steps correctly, your device should now work with the new SIM card!
Let us know if the above method worked for you, and on what device.
