Change entity name again?

[hansdampf (Jan)]

I already tried to change the entity name for a TRADFRI bulb. Following the instruction on

Customizing entities

showed me the following error:
save failed: Invalid entity ID
I liked to change the entity name to: “light.OG_WZ_Lampe_Decke1”. Because of the error above, this seems to be a invalid name. So I tried to “light.OG_WZ_Lampe” first. My plan was to enlarge the name piece by piece until it fails again.
“light.OG_WZ_Lampe” worked, but now the little gear in the top right corner of the is no longer there.

How do I change the entity name a second time?

Already found this post:

Change entity name?

is it possible to change an entity name? I remember awhile back there being an entity config file you could edit. I dont see that anymore. I had a sonos replaced and the new one is coming up as media_player.living_room_2 and killing a bunch of automations. Im looking for a way to change that to media_player.living_room

But searching the configuration directoy gave me only two files with the content “light.OG_WZ_Lampe”:

• home-assistant.log
• home-assistant_v2.db

I think it makes no sense to edit these files…

[Vasiley]

there should be a cog wheel when you click on entity

[hansdampf (Jan)]

thanks for the quick replay. Unfortunally I posted a pre-version on the text first… now you find above the full question…

[anon43302295]

You need to edit the entity registry in the .storage directory.

The reason it broke is because you’re trying to use capital letters in the entity_id and unfortunately there is no error check. Use only lowercase letters.

[hansdampf (Jan)]

Thank you for this useful information. This solved my problem.