The link you provided is only link that provides VAS library for S60 v3 FP2 devices, but unfortunately it does not support s60 v3 devices. We were using VAS 2.0 (VoIPAudioSrvc_v20_SA_BK_3rd.sisx). So far, a common build was possible for both v3 and FP devices due to that mentioned vas 2.0 sis file. If this component with extended certificate validity is not available any more, I am afraid, I have to segregate my code and produce separate builds for s60 v3 and FP devices, which would require much effort now.
Any more idea is highly appreciated.