Current APOS patch is 5.80.... and of course the other files are updaded as well. Did you buy off gamersgate? If so they are all updated including DLC. For DLC you need to redownload the whole thing, but is updated. In future they have changed patching system for AUG update.
Steel Armor: Blaze O War (SABOW)---
ISABOW mod. Check Graviteam forum. New AI vehicle M113a1 with recoiless and M106a1 self propelled mortar carrier. Much of other little stuff too.
Requires AUG SABOW patch from Graviteam. Enjoy