There are many places that host them and there is a thread here that tells exactly how to create your own.how do i download latest sigpatches now? is there a guie that shows to create these?
Sigpatches (GBATemp) — alternative Sigpatches for when others don’t seem to work.
https://gbatemp.net/threads/info-on-sha-256-hashes-on-fs-patches.581550/page-11