The mbn file is the file of the chip in ril, Qualcomm, and needs to be burned in the high general QPST software.

Mbn is a file directly and does not need to be decompressed. You can switch QPST to software download-multi-image, and this table can identify the burning of mbn files.

However, you must be careful when burning the Qualcomm version. You can't recognize the port if it burns out. I suggest you not try it easily.