Difference EG25GGC vs EG25GGB

I have modem Quectel EG25GGC-MINIPCIE with EG25GGCR07A02M1G firmware, but i see that there is other (newer firmware) EG25GGBR07A08M2G but have B not C i name. I see that there are various versions of module - B C - what is difference?

B and C represent different flash sizes, and B has a larger flash.

Thank you, can you share newest firmware for my model? Or i can use firmware with B in name?