[Solved] Entering Failsafe Mode: IP settings on windows

Hello,
I am a new user trying to set up OpenWRT as an access point on my old AC1200 router. Somehow I have messed it up an now I am trying to enter Falsafe mode as described here: https://openwrt.org/docs/guide-user/troubleshooting/failsafe_and_factory_reset
Since I am a windows user I have never changed my IP address before and don't know what I have to do to get on the OpenWRT interface again:

You must set your computer's ethernet port to use a static IP address in the 192.168.1.0/24 network (valid IPs are 192.168.1.2 - 192.168.1.254, subnet mask 255.255.255.0)

Editing IP settings on Windows manually asks for the following points:
IP address
192.168.1.2
Subnetz prefix length (?)
255.255.255.0
Gateway:
192.168.1.1
Preferred DNS:
Don't know
Akternative DNS:
Don't know

Could anyone please tell me what I have to enter there to connect the PC with the openwrt device?
Thank you very much!
Sepp

Use 1.1.1.1 for the don't know parts.

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Gateway and DNS do not need to be set to anything, since in failsafe mode you will not be routing to the Internet. The important thing is the IP address must be within 192.168.1.0/24 and the prefix length is 24 (which is the same thing as netmask 255.255.255.0)

It's also allowed to set gateway and DNS all to 192.168.1.1, which will allow the PC to reach the Internet through the router, if the router is properly configured.

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Thank you very much! This solved my problem!
Sepp