emergency loop in engine prime

how i can do een emergenct loop i know in rekordbox how it works but dont know in engine prime ent the sekond wher i can get a denon usb stick i havde evry thing from dennon butr i will have the stick to (srry for my bad englich) greatz chris

Pioneers used to go into emergency loop if the usb drive was pulled out or stolen, instead of playing silent.

The Primes (at least the 5000 and 5000m) load the whole full music track into the buffer memory so there is no need for an emergency 4 beat loop