Before downloading the Avaya IP Office 500 V2 software, ensure you:

from random "Avaya software" websites—99% of them are scams or outdated version 5.0 files that won’t work with your V2.

:

currently running on your hardware before you start the download?

: Crucial for upgrading the control unit. Do not use the "Admin Lite" version for upgrades, as it lacks the necessary BIN files. Phone Firmware