ER605 unable to connect or ssh

I installed openwrt on my tplink omada er605 and when I restarted the router for the FIRST time, it worked fine, both the web gui and ssh functioned as expected.

after about a week of sitting there turned off, it no longer works.

I used the suggested 192.168.1.1 to connect to it but the connection timed out.

then I tried going into my PCs settings and manually setting it to 192.168.1.1 since I was noticing that It was generating a different IP from the subnet my PC was on.

then I tried to set it manually to within my subnet

then I tried to reset it, I pressed the reset button until the lights started flashing and the lights stabalized and then I let it sit for about 5 minutes and I retried all my steps and I retried them with each port and still nothing

when I try to connect to the web gui, it times out, and when I try to ssh, it either times out or it just refuses

edit (more info)
every time I let it automatically connect via shared internet through my PCs ethernet, it has the IP adress op 10.42.0.1 instead of the openwrt suggested 192.168.1.1 or x.x.x.2 .

I CAN ping it, and it does work, I just can't ssh or https into it

How did you install?

if your router's supposed to use 192.168.1.1, your PC can't.

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I installed by ssh-ing into it and entering the commands on the github repo, I had it connected from my PC to the WAN port of the router and uploaded the binaries. I then rebooted it and I was able to both ssh and use the web gui and even able to do the sysupdate

it worked fine the first time I used

correct, my PCs IP is different from the router, what I did was just manually try to assign it an IP address within my subnet, I used one that wasn't used by any other devices within my network.

I tried assigning it an IP adress via my PC's internet sharing settings, running popOS with Gnome desktop enviroment

Okay, can you see if you can get into Emergency Mode?

The Recovery mode won't work after running the Openwrt install scripts.
From the install link above...

After the install, you will NOT be able to use the recovery mode of the ER605 to flash a factory image to recover from a bad install. You will need to use ubiformat to reflash your mtd3 (firmware) partition if you ever want to restore to the default firmware.

For info, I used the scripts a while ago to install Openwrt on my ER605 and its been fine since.

Which port are you currently connected and which version of OpenWrt did you install?

There was a breaking change between 23.05 and 24.10.

I connect to the WAN port, as per the github instructions, I upgraded the system to 24.10

https://downloads.openwrt.org/releases/24.10.0/targets/ramips/mt7621/

After OpenWrt is installed WebUI and SSH is not available on WAN.
Reconnect and try from one of the LAN ports.
You should be able to reset you IP configuration of the client machine to DHCP/SLAAC and obtain a valid IP configuration automatically.

I dont see anywhere in the Github instructions saying connect to the WAN port. I certainly dont recall ever connecting to the WAN port when I converted my ER605 to Openwrt.

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when I connect and have DHCP, it gives me an IP of 10.42.0.1 this also doesn't let me ssh or HHTP

I have tried it with every port

then you haven't isolated the client and the ER605.

you're absolutely right, it doesn't say it on the github page, my appologies.

I did however connect to the wan port when SSHing for the initial openWRT flashing

how does one do that, when i look it up online, it gives me a bunch of results that either involve IoT,WAP, or SSHing into the router, is there an openwrt article about isolating?

Only connect the client and the 605 using an Ethernet cable.
Disable wifi on the client, if it got any.

I tried this and it still gives me the same 10.42.0.1 IP, I tried unplugging my PC and re-starting it without wifi and I have tried sshing into it with both the WAN and LAN ports, 1 and 4 respectively and I still won't allow me, if 10.42.0.1 IP isn't correct, but it assigns it anways, is that a problem with my PC instead? I'm using Pop OS

I WAS able to enter recovery mode

I flashed the firmware found here
https://support.omadanetworks.com/en/product/er605/?resourceType=download
specifiaclly this one:
ER605(UN)_V2.20_2.2.6 Build 20240718

I then tried to access the webgui and ssh through the LAN port, port 4 to be exact

the tutorial you link asks to set up the IP as 192.168.0.20/24 which I did and although I CAN ping it and it does respond, it does not however let me access the TP webgui to re-flash openwrt. I have tried 192.168.0.20 and also 192.168.0.1 which is the default printed on the bottom of the device.

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Does recovery mode still work?

I'd be surprised if you can easily revert to a TPLink firmware. The github scripts alter the flash layout to allow Openwrt to be installed. In order to get the flash layout back , you would need to restore some flash partitions from a backup.