Can't set static IP after initial instalation

I didn’t set an static IP during the initial instalation of Hass.io. in my RPi3. My router don’t support IP reservation and now I don’t know how to set the static IP. I have extracted the SD and modified the resin-sample file, but it seems the RPi3 don´t read it anymore. I have installed several sensors and made some configurations that don’t want to lose if I install a fresh version of Hass.io. Can somebody help me.

Can you show us your resin-sample file contents?
Are you connecting via Wifi or cable?

I’m connecting via cable, and the contend of the resin-sample is:

[connection]
id=my-ethernet
type=ethernet
interface-name=eth0
permissions=
secondaries=

[ethernet]
mac-address-blacklist=

[ipv4]
address1=192.168.1.11/24,192.168.1.1
dns=80.58.61.250;8.8.8.8;
dns-search=
method=manual

[ipv6]
addr-gen-mode=stable-privacy
dns-search=
method=auto

I’ve restarted several times but the RPi3 continue getting an DHCP adress ignoring the resin-sample.

Probably an unnecessary question, you did put the file in the system-connections folder without any extension to it?

Yes, I did. The file was edited with Notpad++ and saved without any extension.

The only thing I can think of, is that your router is not 192.168.1.1?

Thank you for your interest. For sure this is the address of the router.

In any case I have made a new fresh instalation editing the resin-sample before the fist start and now everything is working ok whit static IP.
I supose that there are not any way to change the ip after de first start.

I’m having the exact same issue. I sure don’t want to rebuild the Hassio system from scratch in order for the static IP update to the system-connections/resin-ethernet file to be parsed.

There really has to be a way to be able to modify IP (or DNS) settings after the initial build, especially given I can mount the SD Card to a Linux PC and can access all of the Resin-OS partitions.

Thanks for any assistance!

Same problem here.