Zte F660 Custom Firmware -

(prevent ISP override): sendcmd 1 DB p MgtServer → change URL to 127.0.0.1 , set PeriodicInform=0 .

There are several custom firmware options available for the ZTE F660, including: zte f660 custom firmware

Patching known vulnerabilities that ISPs may be slow to update. Important Warning (prevent ISP override): sendcmd 1 DB p MgtServer

Some advanced users replace the U-Boot environment via serial console to boot an alternative kernel, but for the F660. but for the F660.