I am trying to use one of your examples and Arduino can't even compile it: Arduino: 1.6.1 (Mac OS X), Board: "LilyPad Arduino USB" httpPost.ino:49:1: error: converting to 'String' from initializer ...
601 is usually when the stack is not properly configured, and by the look of it it seems to be missing the CONTYPE GPRS at least. I'll try to have a look at it during the day and keep you posted. I ...