Currently (in your latest release), the arm9payload.bin is in SD:\3DS\brahma\
It won't appear in the selection screen.
You have to move it into SD:\brahma\
LATEST IMPROVEMENTS :
The "Old 3DS V. 4.5 CFW" is in fact "Old 3DS V. 4.1-4.5 CFW"
The "Old 3DS V. 8.1 CFW" is in fact "Old 3DS V. 8.0-8.1 CFW"
The "Old 3DS V. 9.2 CFW" is in fact "Old 3DS V. 9.0-9.2 CFW"
Hey, just wondering, have you tried booting Devmenu from my CFW launcher ?