OBERHEIM SYNTH

Hi all I was wondering if someone could help me. Im away from my main pc at the moment so I cant check for sure but I'm using a piece of software called midiosx (I think) to load patches...well I can load patchs fine but I cant seem to dump could someone please explain simply how to do this using a free software if possible... as I'm pretty broke....if It's different from my current software could someone please explain how to upload aswell...very sorry if this a real simple question I've been trying to dump them via midi for ages and cannot seem to get it to work..I actually gave up months ago but after writing over a couple of patchs I really needed to keep and also going back to the Xpander this week for work it'd be really really helpful to know. Anyway thanks for any help in advance 

Sean