Verizon Galaxy S5 VoLTE manual update?

[aliakhter]

I have a Verizon galaxy S5 but I switched to T-mobile before the VoLTE update, I am wondering if the update that enables VoLTE and video calls on the Verizon Galaxy S5 is available through Keis or any other source since the OTA updates are not working anymore as I am no longer with Verizon?