WMOD2 firmware

I apologise if this isn’t the place the ask this. I’m trying to chase down a firmware upgrade for a Wavecom WMOD2. My current version info is “421_09gm.2C2 1170856 072501 16:52”. I am after GPRS capability which according to the manual I have requires firmware 526 or later. Is there somewhere I can get the upgrade from?