There is a document in the downloads to help with this:- http://www.mympxplayer.org/nand-flas...ion-df644.html
It's the BG bit in your chip's code that says it's 32Gb, so yes Tweak1029, that looks right 32/8 = 4Gb.
it goes like this
8G = 8G
AG = 16G
BG = 32G
CG = 64G , etc
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