Zlt P21 Firmware Update __exclusive__ Guide

Navigate to or Maintenance in the main menu.

You may be trying to flash a version meant for a different region or hardware revision. Update Stuck at 99% zlt p21 firmware update

Power on the ZLT P21 while holding the Reset button (use a paperclip). Hold it for 10 seconds, then release. The router will enter recovery mode and pull the firmware file from your TFTP server. Navigate to or Maintenance in the main menu