Unable to record blackbox data from Bebop

Product: [Bebop]
Bebop software version: 4.7.2

I am trying to get the sensor data of bebop by accessing the internal_000 via ftp. I followed the commonly used guide to activate the blackbox recording by changing the flag in /etc/debug.conf and also by restarting the dragon-conf with -B option. I don’t see the blackbox folder anywhere. Is there a different method to record the detailed sensor and other info in Bebop for the newer firmwares since the guide is quite old now. Or how can we achieve this. Thanks a lot for the help