Hey if you look at this post:
As per instructions to change port I changed AppDelegate.m port: jsCodeLocation = [NSURL URLWithString:@"http:…github.com
First i think you have to change 8081 to something else, for most people 8081 is used by anti-virus software.
Second i think that shake gesture still doesn’t work even after you change the port, when you shake it and press refresh, it will still give you the same error.
Not sure if this is solved by now? Does it work on your android phone?