I don't know
How do I know if I used SafeA9LHInstaller V1 or V2? Is there some app?
No.Try starting your 2/3ds without an SD Card. If it starts without an SD it's v2, if not it's v1.
Well, you should really know where and when it was done, keeping backups.
Try starting your 2/3ds without an SD Card. If it boots to homemenu without an SD it's v2, if not (blue LED goes on and then off) it's v1.
https://github.com/Plailect/Guide/wiki/Updating-arm9loaderhaxThanks. I'm going to update it.
you probably have shadownand or the unreleased branch or arm9loaderhaxWell, my n3ds starts even without an (micro)SD! And I definetly have a9lh v2.
5th of August 2015 is Cakes booting via MSET at bestYou must've used Safe a9lh Installer v2.0.3 so that means you're on v2 (if you mean the 5th August of 2016 ).