Hello Dave,
our support page => here <= always list's the latest available and supported versions.
In case for the SPIP430 this is at present SIP 3.2.7 and BootROM 4.2.3.
On a SPIP or SSIP phone there is no need for an end customer to flash any BootBlock.
Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.
Best Regards
Steffen Baier
Polycom Global Services
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Notice: This community forum is not an official Poly support resource, thus responses from Poly employees, partners, and customers alike are best-effort in attempts to share learned knowledge. If you need immediate and/or official assistance please open a service ticket through your proper support channels.
Please also ensure you always check the VoIP , Video Endpoint , Skype for Business , PSTN or RPM FAQ's
