Hi
I’ve been using my Sub Phatty happily without a problem for a couple of years now. This afternoon something weird happened - when I switched to ‘activate panel’ the ‘sustain’ in the amplifier envelope was just open and making a constant looping sound. I decided to try and reinstall the firmware to get rid of this - I followed all the instructions but at the end the Sub Phatty did not restart - the midi lights stoped flashing then it just sat there with the lfo, and pitch amt, and hard sync buttons flashing.
I’ve switched it off and switched it on again and now only the LFO light is flashing - it is like a brick, I can’t even try reinstalling the firmware as all the buttons are unresponsive. 
Thanks
Frances