Hi I have tried to update my DT25 to the ver 2 firmware. Before this the amp worked perfectly well.   The update failed - Error 8000000A, which seems not uncommon judging by the forum and other places. The current firmware (as detailed on L6 Monkey) is now "This item is installed but its version cannot be determined".   The amp now does not work. Can turn it on, and most of the lights are on, but cannot select channel A or B (light indicating B is lit), cannot