Far Cry 4 does not have an official "Patch 1.9." The final official update released by Ubisoft was Version 1.10.
You may see websites offering a standalone "Far Cry 4 Patch 19 Free Download" as an .exe or .zip file. Be extremely cautious. download far cry 4 patch 19 free upd
Verdict:
No. Ubisoft stopped support for Far Cry 4 after Patch 19. However, the community has created unofficial fix packs (e.g., “Far Cry 4 Fix-It Pack” on Nexus Mods) that address leftover issues like: Far Cry 4 does not have an official "Patch 1