Before you start, make sure you have the following:
: New firmware versions often resolve intermittent Wi-Fi drops and DSL synchronization issues common in older builds.
This is the most difficult step. ZTE does not publicly host firmware for the H267N because ISPs control distribution.
To update the software on your ZTE ZXHN H267N router, you must access its web-based management interface. This process can be done either by using the built-in Auto-check feature or by manually uploading a firmware file Step 1: Access the Admin Page