Skyrim Patch 1.9 cannot be legally or safely downloaded for PC without Steam.
If you have a physical PC disc of Skyrim from 2011, running it without is a miserable experience. Dragons fly backwards. Quests break. The game crashes every 20 minutes. Skyrim Patch 1.9 Download Pc Non Steam
Do not use the "Steam" version of SKSE with a retail patch. It will fail to inject. Skyrim Patch 1