Latest firmware for M1 Nighthawk (Telstra)

Hi Community,

I've just upgraded an M1 Nighthawk puchased on eBay that was still on NTG9X50C_10.12.02.01 using the FDT tool as OTA wasn't working and there was no Upload Firmware option available in the Web GUI. I was hoping OTA would then work to get it from NTG9X50C_10.25.01.01 up to the latest NTG9X50C_12.xx.xx.xx but I'm still not having any luck. Does anyone have a link to where I can download the latest Telstra version from?

TIA

Brett