This popped up in the oztivo mailing list: (oztivo.net)
Just a heads up that OzTiVo will most likely be receiving a boost in interest with the release of a document I have just created on how to do the PROM mod which is the first step in getting a TiVo HD (Series 3) unit modded to work past October.
https://drive.google.com/open?id=0B5lxlJLWDNmWWVFmbzhoYTItYk0
I feel this is going to be an exciting time - if not a bit new - for anyone wishing to keep their TiVo operational.
Software is not quite ready yet but there are people working on that and some testing will be available shortly.