Hello. We need help for upgrade path for ERS and VSP switchs. Our switch firwmare version is 188.8.131.52 on ERS , 184.108.40.206 on VSP 7200. We dont know how to upgrade properly switch.Can not find any documentation about it. ERS 4926GTS , VSP 7254xsq.
ERS 4900/5900 v7.7.0 release notes can be found here.
you can go from 7.1 to the newest release
VSP VOSS 8.1 release notes are here.
you MUST go the version 6.1 before going to version 8.1.