I'm not sure about your odroid, but I'm trying on a Cubox-I with 1 gb of ram, and I think it may just not fit anymore. I'll have to hunt around for a light alternative, I guess.
Meantime, in your case 2gb is probably only runnable barely. I get memory hangs from things on Firefox go south on 4gb desktops.
It's all just gotten out of hand these days. Especially now with it being a snap denizen.
thanks
Jim