(adsbygoogle = window.adsbygoogle || []).push({}); If I'm on cfw 3.55 and I want to upgrade it to 4.55 do I update it by recovery mode or system settings? Also if it's a different firmware that I'm using would that cause a problem?

If you're on 3.55 you can update to a 4.55 firmware that matches. Meaning if you're on, let's say Geohotz 3.55 cfw, you can update to 4.55 rogero or whatever.

Thanks & do I do that in recovery or system settings?