IMPORTANT NOTE :
Before upgrading firmware, take a configuration backup. After upgrade to 3.9.3 it is not possible to revert and downgrade to 3.9.2 firmware or earlier without factory resetting the unit.
To downgrade from 3.9.3 firmware, reflash earlier firmware using .rst firmware and reload the configuration backup from the previous firmware version
The firmware we recommend is 3.9.3_BT . This version supports vectoring and uses modem code 779517.
Firmware is normally supplied in two different styles: The ALL file will just upgrade the firmware, whereas the RST file will upgrade the firmware and wipe all settings back to factory defaults.