RedSpecialBMG

Hi, I have a spider jam amp and the FBV shortboard MKII. I can´t find enough information about the function 1 and 2 switches :-( . In the advanced guide for the MKII it says that Function 1 controls the COMP ( Compressor) and Function 2 should allow you to switch amp models. If I press Function 1 switch the display tells me only "no new recording" ?????? Function 2 has no effect at all and the displlay will stay blank. What am I doing wrong??? I tried to assign commands to the two switches via the LINE 6 FBV control program but I am not sure what to to choose there. Can anybody help? Thanks