Whats the difference between rst files?

[Matt_S]

Hi guy's i'm going to rewrite my ecu after fitting a maxogen.Just looked back on the fastchip site for any updates, and they have 2 rst files for my ecu 8200_7c03 and 8200_7804.I'm just wondering if anybody knows what the difference is between the 2 files and which one will be best?

I will be putting the 98ron cal on as well

Cheers Matt