I applied firmware 25.12.2 to my TP-Link Archer C7 v5... it updated normally... when accessing via the new IP 192.168.1.1 and trying to log in with the default user (root), the message "username or password is error" is displayed.
I tried username and password "root"; username and password "admin"; user "root" without password; user "admin" without password; none of the combinations worked.
As far as I looked at the documentation, the default user should be "root" with a blank password, but it seems that's not the case.
Is there another default user for initial access?
I also can't access it via SSH because it's not enabled, and without access, it's impossible to enable it.
This is correct -- username is root and there is no password.
ssh is enabled by default. This means that something is not right -- maybe you're not actually connecting to the OpenWrt router itself, or maybe OpenWrt didn't actually get installed.
Can you provide a screenshot of your OpenWrt login page? And can you describe how you are connected (physically) to the C7? Are there any other connections? Is wifi enabled on your computer?
What had been running before you installed/ upgraded (which of those?) OpenWrt?
How did you perform the install/ upgrade?
What exactly is the OpenWrt login page telling you (screenshot)?
For testing, make sure that WLAN on your computer is disabled, connect a single ethernet cable to one of the archer's LAN ports (let's say lan1), keep the archer's wan port unplugged, let it fully boot up (5 minutes, 1-2 minutes should be enough, but we have time and want to be on the safe side), try to log in:
- first via webinterface,
http://192.168.1.1/
screenshot is useful - second via
ssh -l root 192.168.1.1
just copy'n'paste the textual output
in both cases, user root, no password (just hit enter).
Depending on what your router has been doing previously, a factory reset might help you (or not, at least it doesn't hurt). So make sure that it's fully booted up (so ~5 minutes after power-on), press the reset button for 10s, release the reset button, wait another 5 minutes - try the above again. See https://openwrt.org/docs/guide-user/troubleshooting/failsafe_and_factory_reset for additional options.
Sorry.... After turning it off, not restarting it, turning it off and on again, it worked correctly... what happened is that my internet provider's equipment also uses that IP 192.168.1.1... I had forgotten that detail... but now I do... everything is working correctly!
That's often the problem behind issues like this, that's why I usually suggest to use IP ranges other than the well known defaults (for every subnet), so that even if you provision a new device, the subnet ranges never overlap - so avoiding:
- 192.168.0.x
- 192.168.1.x
- 192.168.100.x
- 192.168.123.x
- 192.168.178.x
- any other default IP range of any your devices.
Yes... and that's exactly what I'm going to do! When there's a need to revert to default settings, that will be the first step.
Thank you!