Help! please! Have i bricked my MPC One?

no idea on how i did this but i ended up loading firmware 2.8.1 firmware by accident. now i have the colour at the start and then a blank grey screen with no LEDs on the buttons or anything. Does anyone know if i can somehow revive my MPC One? Absoluteoy gutted.
thanks for any pointers or help

Try turning on the power while pressing FULL LEVEL, BROWSE and PAD BANK C. This will enter the update mode.

thanks so much, seems to have worked much to my relief!
thanks again!!