The app method often only works for “over-the-air” (OTA) updates pushed by your carrier. For manual firmware files, you must use the web interface.
Updating the software in your ZTE MF296R is a safe and beneficial procedure if you follow the guidelines above. It can breathe new life into an aging router, improve throughput, and patch dangerous security holes. Update Software in ZTE MF296R
OTA updates require a working cellular data connection. Do not interrupt the download phase. The app method often only works for “over-the-air”