Hello, Kiti. I am really sorry for the embarrassingly late reply to this.
I sent you an email a little while ago about this.
One of our engineers tried to use the BRCK in Ethiopia. From what I can remember him telling us, there is only one ISP run by the government and internet access is tightly controlled and almost non-existent away from the main urban areas.
I will check with him when I get into the office and get a better idea of the situation there. I hope this is not coming too late for you.