i have one 8100 . set is working but i make a mistake i chang esn (FFFFFFFF/0000000) after that phone show on display ((((SERVICE REQUIRED. PLEASE CALL 1-888-211-4727 FOR ASSISTANCE.))))) & no any key working on key bord i try to chang orgnal esn but phone same problem .
now i not able to enter nam programing r enter any menu .
plz help me about that
what i do now for that
