This is not well explained, as I'm too new at this to understand what I'm doing well enough to write for help. Thank you for your understanding.
On a working 17.04 router, I tried to install VPN configs. That is (or was) a TP-Link Archer C7v2 router, now seemingly bricked. Tried (OpenWRT/LuCI) failsafe, I press C7's Reset/WPS button during power on cycle.
Came to LEDE Project Forum. Searched for keywords: failsafe, C7. Search returned 43 results. Looked at 12 to 20 of them. Some have a link to an OpenWRT page which now "topic does not exist" on several. I found the OpenWRT page on failsafe. It is good if you are a skilled network nerd, but the language is written by someone who knows what to do. I'm not that guy. It's confusing. I tried it several ways.
Cannot seem to find a page that shows or tells about which cable to be plugged in to which device and when. I did try to boot both wan and lan of the router and mode failsafe-powercycle. Fail.
I cannot seem to hit the right moment to hold the Reset/WPS button down. I tried watching Youtube about C7, but it's for Windows and doesn't show the "when" to press.
If possible, give me a URL to a video showing the front panel LED flashing sequence that would work, probably, for any of the C7 routers (maybe previous WNDR-3400s, too), that shows when to press the reset button.
Or does the foregoing mean the device is dead?