Do not create anymore threads on this issue.
yes, you can use that guide
run bannerbomb and once you install the hbc, run a SysCheck to see what ios's are installed/patched - this way you'll know what's installed
here's the link for syscheck
What exactly does a syscheck do? Wand what syscheck should i choose sorry im new...
All the info you need about it is right there in the link he provided for you.