YP-U6 Service Mode
 

When I installed firmware to my U6 i bricked it, and now I need enable service mode for repair with FWDN. But R0, R3 way and other doesn't working with U6.

Sorry for bad english.
I hope for your help

Sorry there is no recovery tool available for the general public.;)
You need to send it back to the service center

There is no combination of buttons jammed in which the player goes into service mode? for example, usb + play + reset

Nope, you can't do anything without the recovery tool.
And it's especially made for the U6. It's not FWDN or so.

eh, thank you ;)