B4R Question WebUSB: interesting thing

[peacemaker]

HI, All

Who knows this https://wicg.github.io/webusb/ ?
It looks like the USB connected board can be re-flashed via web-browser.
What is DFU-mode ?

 

[Num3]

What is DFU-mode ?

Device Firmware Update, it's a low level entry point to the system (similar to recovery, but more powerful) that enables the user to change the firmware or parts of the OS, before it boots.