Baseline (Widescreen) Solution & Issues
First back up DXWrap.dll. Open DXWrap.dll from the bin folder of your game installation in a hex editor, search for this: (the actually changed parts are bolded, the rest is just to make sure you've got the right area)
02 00 05 00 00 C7 00 00 04 00 00 C3 8B 4C 24 08 8B
and overwrite it with this:
02 90 06 00 00 C7 00 1A 04 00 00 C3 8B 4C 24 08 8B
This will change 1280x1024 to 1680x1050. The other resolutions appear to be in the same area, so if you want to change something else you should be able to figure it out using the NBA Live thread.
I used a hex editor and searched for the first string above. I then changed to second string above by overwriting bolded entries...
Ultra/Super-Wide (21:9/32:9) Specific Solution & Issues
Eyefinity / Surround Specific Solution & Issues
4k UHD Specific Solution & Issues