I am wondering about the NAND chip THGBM2G3P1FBAI8: It is stated by 3Dbrew to be 1GB sized, but on the website of a decapping company it is told to be 2GB - refer https://chipworks.secure.force.com/...GBM2G3P1FBAI8&viewState=DetailView&cartID=&g= So which size is correct? I would assume that the guys with detailed pictures of the internals would knows it better?! I tried to find some specs about the chip, but I had no luck. Also I didn't find any shops to buy one. The spec can tell us how many pins are required - probably these are only 8 pins CLK, CMD, DAT0-3, VCC and GND. Perhaps only CMD is needed for switching but therefore the data lines needs to be open-drain. Or perhaps there is a separate chip-select... Background is, that I still have the idea of connecting a second chip in parallel with a logic to switch between them, which would give us the ability to have two separate Firmware versions. But this can only be realized if that chip (or a compatible one) is available and additionally if we can cut the connections of the origin NAND and rewire them to the switching logic without desoldering the complete chip.