Many network operators look for legacy airOS 5 variants like Xw.v5.6.11 to recapture specific signal performance variables or utilize specialized regional test tools. However, upgrading past airOS v6 locks down the bootloader. airMAX - Software Downloads - Ubiquiti
XW.v5.6.11 is a legacy firmware version for Ubiquiti airMAX M-series devices utilizing the "XW" hardware platform. Released around 2016, it served as a stable bridge between the older v5.x series and the major overhaul of v6.x. Ubiquiti Community Compatible Devices Firmware Version Xw.v5.6.11