Help with Netgear R6120

I flashed the wrong update on this router after installing the base version of openers. Now only the light on the left blinks. So after hours of searching the web and trying with nmrpflash (if that’s what it’s called) but it won’t detect the router, I decided to open the router. I found the serial port and connected my usb to serial adapter but when I run putty, it just hangs... any help? I know this is a long shot but if anyone could help I would greatly appreciate it.

@BeanFlickR, welcome to the community!

Do you also have a 5V to 3.3V TTL serial converter connected?

I have an FT232RL