unable to connect i9100 in cwm recovery mode
You could give adb a try, and use adb push &lt;/source/on/PC/file.zip&gt; &lt;target/on/Nexus/file.zip&gt; to transfer the files.

I you don't have ADB installed on your machine yet, and don't want to install the full SDK, take a look at Is there a minimal installation of ADB? Also, for more information on ADB, there's always our adb tag-wiki as a good starting point.