Use this forum to chat about hardware specific topics for the ESP8266 (peripherals, memory, clocks, JTAG, programming)

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By BlitzSSS
#38644 C1 is an option in the newer versions of ESP FLASH DOWNLOAD TOOL from espressif for 16Mbit or 32Mbit. Seems to be the difference between 32Mbit(512KB+512KB) and 32Mbit(1024KB+1024KB).

Not my screenshot but you can see it here under flash size.

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