Dual SSID with software 5.29.107.12
Do I need to prevent upgrade to this version? Can I?
Do I need to 'poison the DNS' as in the single SSID set-up guide?
No 5.29.107.12 has been automatically upgraded for some time, that particular upgrade server has been discontinued.
DNS poisoning does not work.
Have a read through the Tripod (http://bt2700hgv.tripod.com/ir1002700HGV.htm) Guidance for the 2700HGV, it is always up to date on current understanding of the router.