KUNA NJIA TATU HAPA, ikifeli moja tumia nyingine;
1.Jaribu kwenda kwenye software update then check for updates (OTA-Over The Air) update
2. Tumia smartswitch ku update kwakutumia pc
3.Tafuta updated firmware yenye build number inayoendana na hiyo simu then ipige humo.....