>On Thu, 1 Aug 2013 03:23:29 PM Tixy
        wrote:
      > > On Thu, 2013-08-01 at 12:18 +0800,
        Adam Ward wrote:
      [snip]
      > > Ok, looks like I can get this to
        work.
      > > After updating the u-boot version,
        Is it safe to do a dist-upgrade to get
      > > things like the current kernel etc
        ?
      > 
      > I expect so, but it's not something I
        did as I ran the Debian installer
      > to install a system from scratch rather
        than upgrade what the plug
      > shipped with.
      > 
      > I also didn't follow the defaults and
        installed to a removable SD card
      > rather than the internal one, and
        modified U-Boot and flash-kernel
      > accordingly. I like my systems on
        removable media so it's easy to clone
      > a system image as a backup and swap
        hardware out if it goes faulty.
       
      I have the same setup, if I remove the SD
        card it will boot from the internal one instead due to my u-boot
        environment settings [1] and [2].
      Will the debian installer change these
        settings ? that is not something I had considered.
      
    
    Neither the debian installer nor a dist-upgrade will change your
    u-boot environment settings.