Differences between RM3700 & RM3750

We are currently making a product based upon the RM3700 module, now a customer wants 100Mbit capable devices. The RM3750 module has 100Mbit capability, but are there any other differences?
It would be ideal if the firmware for the 3700 could be used unmodified on the 3750…

Did you ever get an answer to this? I’m in the same boat. I dumped from at 3700, converted the output to a .bin and loaded it with Rabbit Field Utility, but my device wouldn’t work.