I just tried this. Problem is, the utility requires having a local proxy address (the offered 127.0.0.1:1081 being clearly a placeholder). Which for Geph is... what? I tried just the address of the server listed on Geph's main. I tried adding the Listening Port there in the same format.
It didn't work. I'm pretty sure I followed instructions well.
To clarify: I did also try 127.0.0.1:1081, as per the letter of instruction, just in case. But it doesn't work, the launch still fails at the update check.