OS 5.0.0.592, 8520, Official, OS, Wind Hellas 8520 Official OS 5.0.0.592 Wind Hellas 8520 Official OS 5.0.0.592 Wind Hellas
OS 4.6.1.318, 8520, E-Plus, Official 8520 Official OS 4.6.1.318 E-Plus 8520 Official OS 4.6.1.318 E-Plus