Whenever i try to install lithium sdk i get a ETIMEDOUT.
Can you please paste the command you ran and all the output here? It would be helpful if you can run the command in verbose mode here.
npm install --verbose
Finally solved the issue. The error was because of the old node version. After upgrading node to the latest version everything is working fine.
1. Go to Finder. Select "GO" then go to folder.2. Type /Users/YOUR USERNAME Library/Android/sdk/3. Switch to nested view.4. Drag the sdk folder to your sidebar shortcut.5. Open Unity, locate folder by clicking the shortcut.