Suppose I purchased a Vertu mobile phone prior to 2017. Also suppose (as I would expect to be the case) at that point I revived an offer to download from their web site the source code for the modified linux kernel that is running the phone, as required by the Gnu Public Licence (GPL).
In 2017 Vertu went bankrupt and the web site and source code disappeared from the internet. I now want to sell this phone but cannot offer access to the source code. Is there a way to transfer ownership of this phone in a way that complies with the GPL?
Note that while this question is phrased in the 1st person it is purely hypothetical, I have not spent £40k on a phone and I suspect there are not linux contributors hunting ebay.