It is important to clarify upfront that the search keyword appears to be a fragmented, high-volume search term combining elements of a popular video game, a technical issue, and a specific homebrew tool ( nspupdat ).
: Secret exits hidden within standard levels (such as 1-2, 1-3, and 6-7) are required to unlock "A" and "B" levels. donkey+kong+country+tropical+verified+freeze+nspupdat