In my early 8 days Adrian sent me two discs, one each of R+ and R-.
They both worked in mine so I passed one of them on to someone else and that worked for him.
Couple of years back so I cannot remember which one I kept at the time.
I've since done two more updates, both worked but rarely use it now.
I an on Waze
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Ray at Wigan Pier
2014 A8L D4 4.0TFSI Gold (Sticker says "Beige") Can't leave you in a black smoke cloud anymore..
In progress, Nothing left to do.
Gone 2004 A8 D3 3.0 TDI. Ebony Pearl Black (with little bits of other colours and glitter)