Tool to flash 83_IMAGE to the harman/kardon Invoke Speaker
Choose a NAND image below, or pick your own 83_IMAGE file.
Hold down the reset button.
While holding reset, turn on the device.
Press the mute button 4 times.
Wait for the yellow light to appear, then release reset.
Click Connect & flash and choose the device.
Wi-Fi and device name (optional)
Writes these into the factory defaults (/caldata/FENV.bin) of the selected image before it is flashed.
Leave the network name empty to keep the image's Wi-Fi settings, and the device name empty to keep its name.