After Resetting 7911g, screen went blank...Plz help

Hello ,

please after resetting 7911g phone, the screen went blank not showing nothing at all...please help on what i need to do. Thanks

dis is what i did;

Power off the phone. 


Hold down the # key. 


While holding #, connect an AC adaptor to the phone. 


Continue to hold # until the line buttons blink amber. 


Release the # key. 


Enter 3491672850*# 


  • Try plugging the phone in, and ensuring it has network connectivity to the CUCM or CUCME system. Wait for a little bit to see if the phone attempts to boot and download new firmware at all. If the phone does not turn on at all, ensure the power supply is working properly.

Sign In or Register to comment.