button once. Release BOOT when a drive appears on your computer. Using WebSerial : Visit the Adafruit WebSerial ESPTool in Chrome to erase and flash the newest firmware. Restore Stock App : You can download the factory firmware binary from the Adafruit MEMENTO Quick Start Guide Resolution Settings
Select the version (look for 013 or the latest stable) and click Flash . Key Features in 013+ : memento firmware 13
If this is your first time flashing, run Zadig (included in the installer pack) to replace the stock USB driver with the libusb-win32 driver. Select your device from the dropdown (usually listed as "ATJ227x DFU"). button once