According to this thread over on the GSM side, one should be able to flash NON-HLOS.bin the same way:
As I understand, this is also a modem file -- the counterpart to modem.bin, but I am unclear as exactly what functionality is embedded in this image.
Edit 1: Looking at the text strings in the NON-NLOS.bin file, there are a lot of references to voice filters, gain, pitch, speech, agc, etc, and even "European digital cellular telecommunications system 4750 ... 12200 bits/s speech codec for Adaptive Multi-Rate speech traffic channels". Seems like this file is mostly vocoder-related stuff.
Edit 2: Google led to this: http://www.anyclub.org/2012/06/acdb-...se-images.html
It mentions that if "If any of MPSS, DSPS, WCNSS, or LPASS is recompiled" NON-HLOS.bin should be "updated". DSP - digital signal processor, WCNSS = "Wireless ConNectivity SubSystem (WCNSS) driver. The WCNSS is a new Hardware integrating WLAN, BT and FM technologies that is built into new MSM chip." I can't definitions for MPSS and LPASS, but MPSS is mentioned in some Qualcomm job listings relating to Modem Test Technicians/Engineers, so it seems logical that these two files should go together, but given some have had hard bricks when flashing other parts of the firmware, I'd be cautious.