Phantom/Spark Update Help

[ragwo]

I did a stupid thing and uploaded a fresh firmware with the serial number ew02 to the phantom. Now the device is controllable, it even shows that the signal is on, but there is no sound at all. And during initialization (power on), instead of movement, only a quiet rustle from the subwoofers. Is there any way to get the old firmware back? Sorry for grammatical mistakes - English is not my native language

Sorry for your troubles. How did you update the speakers? Did you get hold of a firmware image? I have the old 2.9.0 firmware somewhere, but I haven't tried two install it and it's very likely to brick your speakers. Have you tried to reset the speakers or tried to force a reinstallation of the firmware? There's a how to somewhere here on Devialetchat.com, I'll see if I can find it.

Edit:
Here's how to downgrade to 2.11.5. Which firmware are you using now?
https://devialetchat.com/showthread.php?...2#pid99562