Two stories on the AntaraNews web site both assert the FDR was just found.
The time notationss are within a few minutes of 11:00 p.m. May 31 Indonesian time.
As translated by Google translate, the second story asserts that the FDR was found in good condition (unlike the charred external appearance of the CVR) buried in the ground about twenty meters from the tail of the plane.
FDR story 1
FDR story 2