[DaveBlake]

Do you see it extracting the tar on the first reboot after copying over the tar - any errors? How much free space do you have in your second partition - are you out of free space? What version does "lsb_release" return in ssh (after the upgrade)? Are you "booting from NFS" or some other boot method that disables the automated update?

Millhouse I presume this is a reply to me (another post interceeded), thanks for being so quick. Currently reformatting the SD card and trying again from scratch (Kodi 15.0 build etc.) because SSH stopped working. But will answer best I can.

1) Do you see it extracting the tar on the first reboot after copying over the tar - any errors?
A column of text ran on startup, I presumed that was extraction, but too small and fast for me to read so no idea about errors. Can I capture this somehow if it happens again?

2) How much free space do you have in your second partition - are you out of free space?
Loads, 8MB card so should be OK I hope

3) Are you "booting from NFS" or some other boot method that disables the automated update?
Boot from SD card.

Will check lsb_release when up and going again.