Flash Modes Database

Depending of fastest compatible SPI mode, available modes are:

QIO	QOUT	DIO	DOUT
✓	✓	✓	✓
✗	✓	✗	✓
✗	✗	✓	✓
✗	✗	✗	✓

ESP32

Device	Flash ID	Fastest Mode
ESP32-WROOM-32D	204016	DIO
Shelly Plus 1PM	204016	DIO

ESP8266

Quad modes (QIO and QOUT) need GPIO 9 and 10. If device uses GPIO 9 or 10 with any function, possibles modes will be only DIO and DOUT.

All devices with an ESP8285 chip supports only DOUT mode because flash is integrated into ESP chip.

Device	Flash ID	Fastest Mode
ESP8285 chips	All	DOUT
DoHome	144051	Unknown
ESP-01S	14325e	DOUT
ESP-01S	14301c	Unknown
ESP-01S	1440e0	QIO
ESP-01S	14605e	QIO
ESP-01S	1460ba	DOUT
ESP-01S	1640ef	QIO
ESP-12F	16400e	QIO
ESP-12F	164020	QIO
ESP-12F	16405e	QIO
ESPDuino	1640e0	QIO
Gosund	144068	Unknown
Shelly	15400b	QIO
Shelly	1540a1	Unknown
Shelly	1540c8	QIO
Shelly	1540ef	QIO
Shelly	15605e	QIO
Shelly	15701c	QOUT
Shelly	1620c2	DOUT
Smart Home	1440a1	QIO
Sonoff	14405e	DOUT
Teckin SP22	1440a1	QIO
TYWE3S	1540c8	QIO
Wemos	1640c8	DIO
Wemos	1640d8	QIO
Wemos	1640e0	QIO

ESP8285 Devices	Flash ID
Gosund	144051
Sonoff	14325e
Sonoff	144051