Depending on your overall technical goals, you will look for one of three "full" firmware formats: 1. Official Web-UI Upgrade Binaries

Are you looking to specific settings for a new ISP, or are you trying to troubleshoot a stability issue with the official firmware? Download for XZ000-G3 V2 - TP-Link

There is a significant difference between hardware versions. Version 1 (V1) is notoriously difficult to modify via software, with some users resorting to physical soldering for UART access to "dump" or flash the firmware. Important Precautions