If running in an offline mode I'd recommend visiting the HPE SPOCK pages, they now have a handy summary of the recommended patches for each release. I still keep a manual track of each release from the support release notes pages as this summary doc has only been around for a couple of years (it's mostly aimed at required minimum patch levels before allowing major upgrade but a good start).
https://h20272.www2.hpe.com/spock/utility/document.aspx?docurl=Shared%20Documents/sw/array_3par/3par_upgrade_recommend.pdfGenerally be careful of updates with drive/cage firmware, these sometimes get withdrawn, although it maybe related to 1 of 6 updates within the pack but they don't always say why. Support usually have extra info on which patches are on the current "only use if required" list but they don't always have the latest releases (I've had to point out some replacement patches in the past).
PS My 9000 series MU3 boxes were updated resented by support and are currently at the following level, for reference;
3.3.1.460 (MU3)+P50,P58,P61,P77,P91,P92,P97,P109,P114