4. The original telnet switch option in K662C security suddenly can't be used, which can be selected before, now it becomes gray, is it that the system is automatically updated, tr069 has also been deleted, but the firmware version has not changed, and the background telnet function can also be used normally.

Enshan Wireless Forum0 1. The mobile and in-home plug-in can't be used, it should be K266C without this plug-in.