I have been looking for USA 875.3615. I haven't found it yet.
However, I see that 875.3673 is supported on my device. What are the differences between these 2 maps? There must be something because the size of the files are so much different.
As there no such map United_States_875.3615 uploaded I can compare only UK_-_RoI_875.3615_730cs & UK_-_RoI_875.3673_730nc maps. I suppose there will be similar result between appropriate United_States maps:
1. All main files are identical
2. 3615 includes files cspeech and cphoneme.dat which absent in 3673
3. 3673 includes file cphonmlh.dat which absent in 3615
4. files tables.dat/ *.meta/ *.pna just unique for any particular map - don't pay attention to them.