Stuck on the same distance 65439

[bzt543]

Is there a reason why im stuck on the same distance when running MFOC? Currently using ACR122U reader trying to find the keys to Mifare Classic 1K tag. Thanks.

Using sector 02 as an exploit sector Sector: 0, type A, probe 0, distance 65439 ..... Sector: 0, type A, probe 1, distance 65439 ..... Sector: 0, type A, probe 2, distance 65439 ..... Sector: 0, type A, probe 3, distance 65439 ..... Sector: 0, type A, probe 4, distance 65439 ..... Sector: 0, type A, probe 5, distance 65439 ..... Sector: 0, type A, probe 6, distance 65439 ..... Sector: 0, type A, probe 7, distance 65439 ..... Sector: 0, type A, probe 8, distance 65439 ..... Sector: 0, type A, probe 9, distance 65439 ..... Sector: 0, type A, probe 10, distance 65439 ..... Sector: 0, type A, probe 11, distance 65439 ..... Sector: 0, type A, probe 12, distance 65439 ..... Sector: 0, type A, probe 13, distance 65439 ..... Sector: 0, type A, probe 14, distance 65439 ..... Sector: 0, type A, probe 15, distance 65439 ..... Sector: 0, type A, probe 16, distance 65439 ..... Sector: 0, type A, probe 17, distance 65439 ..... Sector: 0, type A, probe 18, distance 65439 ..... Sector: 0, type A, probe 19, distance 65439 ..... Sector: 0, type A, probe 20, distance 65439 ..... Sector: 0, type A, probe 21, distance 65439 ..... Sector: 0, type A, probe 22, distance 65439 ..... Sector: 0, type A, probe 23, distance 65439 ..... Sector: 0, type A, probe 24, distance 65439 ..... Sector: 0, type A, probe 25, distance 65439 ..... Sector: 0, type A, probe 26, distance 65439 ..... Sector: 0, type A, probe 27, distance 65439 ..... Sector: 0, type A, probe 28, distance 65439 ..... Sector: 0, type A, probe 29, distance 65439 ..... Sector: 0, type A, probe 30, distance 65439 ..... Sector: 0, type A, probe 31, distance 65439 ..... Sector: 0, type A, probe 32, distance 65439 ..... Sector: 0, type A, probe 33, distance 65439 ..... Sector: 0, type A, probe 34, distance 65439 ..... Sector: 0, type A, probe 35, distance 65439 ..... Sector: 0, type A, probe 36, distance 65439 ..... Sector: 0, type A, probe 37, distance 65439 .....