EspFlasher

Open source XBOX 360 NAND flasher firmware for ESP32

Wiring:

SPI or eMMC-over-SPI

ESP32	Xbox
16	SPI_MISO
4	SPI_SS_N
5	SPI_CLK
17	SPI_MOSI
21	SMC_DBG_EN
22	SMC_RST_XDK_N
GND	GND

POST reading (not implemented yet)

ESP32	Xbox
	POST bit 0
	POST bit 1
	POST bit 2
	POST bit 3
	POST bit 4
	POST bit 5
	POST bit 6
	POST bit 7
GND	GND

Kernel Debug UART (not implemented yet)

Pico	Xbox
(UART0_TX)	KER_DBG_RXD
(UART0_RX)	KER_DBG_TXD

SMC Debug UART (not implemented yet)

There is a second debug UART in the Southbridge that can be used by the SMC firmware to read/write bytes. On most Retail PCBs only the TX pin is actually wired to to the debug headers, but RX can be accessed with some modifications. For simple debug output from SMC firmware, it is enough to only wire up SMC_DBG_TXD.

Pico	Xbox
(UART1_TX)	SMC_DBG_RXD
(UART1_RX)	SMC_DBG_TXD

Acknowledgements

• balika011 for the original PicoFlasher
• 15432 for eMMC SPI support
• Hax360 for overhauling the project
• ExposureMG for ESP32 support