...updating the software on my AVR300 this morning. I wanted to upgrade from 2.90 to 3.25 because of the few annoying bugs I'd spotted. Having upgraded the amp to 2.90 previously, I wasn't worried. All went fine until, right at the end of the progress bar, I got a failure message. Switch amp off, restart -- nothing on the display, no activity and no 'on' indicator, apart from some relay clicks from inside the box. Panic! Thoughts of expensive trips to the dealer plus doing without the amp for a month while it got fixed. Calm, calm, calm. Tried pressing the programmming buttons, RDS & UP. Held in for a few seconds, the PROGRAM... display came up. The amp was waiting final instructions, even after a switch-off. I tried reprogramming using both 3.25 and the 2.90 update files but it didn't work. I backtracked to the older 1.4 version of the AVR Programmer and tried again. Suddenly, it just worked. So my advice? Update your AVR300 software but use version 1.4 of the updating program.