Being a busy person I should have known better, but after reading positive comments on the forum about the impact of the firmware update on the nDac's performance I decided to try it when I had a spare 5 minutes.
I first checked my existing firmware version. The lights blinked 3, then 2 and 4, then 2. According to the firmware decoder table contained in the update instructions that seems to mean my unit had firmware v2.5.4. I don't know what that means, but it's different from v4.11.8 so I assume that meant I didn't have the latest version. After all, I purchased this unit a year before v4.11.8 was released in December 2015.
I downloaded v.4.11.8, unzipped the files, and put the five update files on a Sandisk Cruzer Blade 15GB flash drive. As far as I can tell they were in the root drive because they were not contained inside of any folder. I populated them directly onto the flash drive.
I turned the Dac off, and then on again, and after it was up and running I inserted the memory stick in the front USB port. The five lights lit up, but then they never went off one by one as the instructions told me to expect.
I consulted this thread from 2016: https://forums.naimaudio.com/to...ights-permanently-on. Based on Jan-Erik's suggestion, I took the flash drive out, powered the unit off, did a hard restart by powering the unit back on while simultaneously holding down the Dock and 4 buttons, and then I inserted the flash drive into the USB port on the back of the unit after all five lights went on.
The five lights then went off one by one, which gave me some hope, but then they all went back on again. Basically, the unit is frozen and won't play any music.
Is this fixable?