When it comes to computery, I'm a bit of an idiot. So here is how I did in, in easy language.
Burn the discs.
Stick the first one in the US.
After a minute or so it will be spat out.
Remove the disc completely.
After about 15 minutes, the logo will flash repeatedly.
Wait for it to stop flashing.
Put the US into shutdown mode and then turn it off.
Wait a minute.
Turn it on again.
The logo will flash for quite a while.
When it stops flashing, check in the old DTC that it is now at 1.6g.
Put in the second disc.
After a little while, it will be spat out.
Remove the disc completely.
After 15 minutes or so, the logo will start flashing. The flashing lasts longer this time.
(after about 10 minutes, the logo flashed once. I ignored this and waited, which was the right thing to do).
When the logo light becomes solid, put the US into shutdown mode and turn it off.
Wait a minute.
Turn it on again.
The logo will flash for quite a while. Don't panic.
When the logo is solid, uninstall the old DTC, and install the new one from the second disc.
Check in the new DTC that the server software is now at 1.7a.
Pat yourself on the back - job done.
I do hope this is helpful.
Posted on: 18 July 2013 by ChrisH
Like your style HH 
maze, I have had a new power supply for the US several months ago, but I've had it since 2011 and that was the first malfunction.
This upgrade worked pretty much to plan though.
Im always nervous, just in case it doesn't, and I'm sorry that it hasn't gone well in your case.
Naim are always very responsive though, so I'm sure / hope yours will be sorted pdq.
Posted on: 23 July 2013 by Bart
I did my UnitiServe update last evening, and kept HH's post open as I progressed. All went just as described, with three comments.
1. No need to remove the cd's -- my uServe spit them out onto the floor. (I think it was saying, "Ptooey, this isn't Miles Davis.")
2. The 'it takes 15 minutes for the logo to start flashing' was accurate to the minute for me. But the time that the logo actually flashed was both times pretty short -- 1-2 minutes, no more. Note: this flashing is at a faster rate than seen when the uServe is being shut down. The faster flash will tell you that it's updating itself.
3. Back-patting is optional, but I agree with it and recommend it.
I am not sure that ALL of the new functionality is within the updated OS X app (n-Serve for OS X). Can anyone comment as to whether the Windows DTC version is needed for some functions?
Posted on: 10 August 2013 by Claus-Thoegersen
Originally Posted by David O'Higgins:
Excuse my ignorance, but where in DTC do I discover what the software version is? I have looked in 'about' , but I don't see anything like 1.6a?
The important thing is the system version of the firmware running on the server.
On the Windows dtc, on the tools tab open Status & messages, highlight system status
scroll Down to
system version wich should be 1.7A-sp1
On n-serve, under more, settings, you will find both the version of n-serve and the system firmware called server version.
Claus