Both of my Hopper3 receivers also updated to H352 and my Joey3 updated to J552 last night.
1) I tested trick play on both my local and my remote Hopper3 and both are still working ok. Each skip forward is 30 seconds and each skip back is 10 seconds. Multiple pushes of the skip forward or skip back work correctly.
2) I tested On Demand, Prime Video, and Netflix and they are all working well.
3) I tested multiview with one pane playing a DVR on my local Hopper3 and one pane playing a DVR on my remote Hopper3 and the other two panes playing live local programming using trick play and everything is working well.
4) I have not found any problems yet.
Let me know if you want me to test anything else.
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