CC3100BOOST Rev 3.1 vs Rev 3.3

I am wondering what the differences are between Rev 3.1 and Rev 3.3 of the boosterpack. I am wondering this because the two have very different behaviours to the point were 3.3 sort of works but 3.1 does not work at all. 

I have used the CC31XXEMUBOOST to see that there are two noticeable differences.

REV 3.1:

ROM - 0x111

FW   - 2.06.7.31.0.0.3.2.1.1.8.7

REV 3.3:

ROM - 0x222

FW   - 2.0.7.0.31.0.0.4.2.1.5.3.3

Is it possible to update the FW in the Rev 3.1, are there hardware differences as well between the two boards, why should one work with the demo TCP_Socket with no issue and the other give me lots of troubles.

Any help would be very much appreciated.

Kas