I'm launching the installer like this:
curl -v -X POST "http://192.168.86.57:8060/launch/11?contentId=myChannelID"
Is there any way with this that I can tell it special params my own channel accepts on launch? I used to do it with the /install/myChannelID command but it doesn't seem to work anymore.
Just add more parameters after the 'contentID=mychannelID' and they'll be visible as launch parameters in your channel startup code. See https://developer.roku.com/docs/developer-program/discovery/implementing-deep-linking.md#using-ecp-c... for a guide.
That works well when launching my app. But if launching the app store with my app as contentID then it doesn't seem to pass those once the user opens the app from the store.
No, there's no way to customize the parameters the app gets when being launched from channel store.
That's too bad, back when /install/myChannelID worked, you could pass stuff.