Stop the cfe, then type: nvram erase then enter. Don’t do nvram commit.
After doing the nvram erase you should have a continuous ping of ttl=100
Then type: flash -noheader : nflash1.trx. Note it’s nflash.
Then I use tftpd32/64 by jourin to upload the firmware. After it uploads, wait till...
I’m confused. Shouldn’t he be plugging in the routers 19v power adapter into the 24v ups? Is so wouldn’t it be running as it normally would be if plugged into a wall outlet?
I wouldn’t see what not. Not sure what your voltage is in Australia but here in the USA it’s 110v. The router gets the 19v from the power adapter not what is supplied to it, as long as it is more than 19v.
The concern I would have is the amperage. Will your ups have enough amps?
Only thing I can suggest is try to use alternative firmware. Like dd-wrt. I’m not sure tomato is available for it.
Try this ftp://ftp.dd-wrt.com/betas/2019/09-24-2019-r41117/asus-rt-ac3200/asus_rt-ac3200-firmware.trx