Thanks for the feedback.
Wanting to flash a Optus AX5400 to merlin firmware, have exposed and enabled the Telnet and SSH as they are hidden by the sip Optus.
However I am using a Mac and from what I have been able to find the below instructions work, just not sure what to do from this point as the mentioned programs winscp and putty are not on a Mac and I really am new to this so not much of an idea, tried countless searches but can't find any help
These are the steps I have left
Upload firmware file
1. go download firmware from github.com (.w file extension is the firmware )
2. I used winscp to upload the file to the router. connect using SCP protocol to the router IP address using the default username/password (optus/yourpassword)
3. upload file to the /tmp/home/root directory
Flash firmware
1. Download PuTTY and connect to the router IP address using SSH and default username/password. You should be in the same directory as where you uploaded the file "/tmp/home/root". just do a ls and you should be able to see the file you uploaded
2. run the following command without quotes, example is based on the latest firmware version as of the date of this post
"hnd-write DSL-AX82U_386.5_2-gnuton0_cferom_puresqubi.w"
once that is finished issue a reboot command and the router will restart and wait a few minutes it'll come back up.
Any help is appreciated, thanks