With many of the older phones, like the 7900 series, you could delete the ITL file on a phone by unlocking the phone and then hitting the delete softkey. With the new 9900 series of IP phones, including the 9951
Delete the ITL file on a Cisco 9900 series phone
![Delete the ITL file on a Cisco 9900 series phone Delete the ITL file on a Cisco 9900 series phone](https://www.ucguru.com/wp-content/uploads/2016/04/9971-ip-phone.jpg)