While updating with the Nighthawk app, my phone had a short service outage, and disconnected from my router while updating. It now only displays a flashing power light.
When I connect it to my PC and power it on via holding the reset button and pressing the power button, the LAN connection and power light flash.
I've tried a few of the TFTP methods, to no avail unfortunately.
It tells me that it wants file R6120_V1.0.0.76.img which I do have on my PC, however it tells me it cannot be accessed due to the file being used elsewhere, even though I have all windows closed. I've manually set my IP as follows - IP 192.168.1.10, Subnet 255.255.255.0, Default gateway 192.168.1.1
I set the host to go through 192.168.1.1 and the port to 69. Server interface is the LAN cable connected to my PC.
> I've tried a few of the TFTP methods, to no avail unfortunately.
"a few"? Which? "no avail"?
None of that is a useful problem description. It does not say what you did. It does not say what happened when you did it. As usual, showing actual actions (commands) with their actual results (error messages, LED indicators, ...) can be more helpful than vague descriptions or interpretations.
> It tells me [...]
"it"? Actual message(s)? Copy+paste is your friend.
I'd stick with the command-line TFTP client program.
It tells me that it wants file R6120_V1.0.0.76.img which I do have on my PC, however it tells me it cannot be accessed due to the file being used elsewhere, even though I have all windows closed.
That's often a sign that you are not launching TFTP from the directory where you have stashed the firmware file.
Try doing a "CD" (change directory) shuffle to get to where it is. Confirm that with a "dir" command.
If that doesn't work there are other things you can try.
