Open - Ashes TXPK Creator\txpk\fileIndexes.txt and replace whats there with this -
props\microphone\textures\microphone_col.dds,42240
props\microphone\textures\microphone_nrm.dds,42240
props\microphone\textures\microphone_mat.dds,42240
Then copy microphone_col.dds, microphone_nrm.dds...