Some things to know about that backup:
- Assuming you truly did follow the guide to every word, it contains the data you had before you even started hacking
- It has A9LH pre-installed on it, but you should always "Restore SysNand (Keep A9LH)" if using Decrypt9, but restoring SysNand in general using Hourglass9 should keep A9LH no matter what.
- Even if you tried to Restore SysNand without keeping A9LH, because that backup in question has A9LH pre-installed, it won't remove A9LH. You can remove A9LH (not recommended) by running SafeA9LHInstaller via renaming it to "arm9loaderhax.bin"+put it on your SD root and tell it to Uninstall A9LH.