| Hello.
Please do the next:
Please do exactly the next:
1. Make Factory Reset and reflash the phone with "G920TUVS3DOJC_G920TTMB3DOJC_TMB_Android_5.1.1 " firmware from the Support Area.
2. Root the phone with CF Auto Root.
3. Remove SIM card from the phone.
4. Write First Security backup back into the phone.
5. Repeat "Unlock" operation.
Post here result and full Software log of performed operations. |