Default [Q] Jellybean firmware for D80220b-BUO needed.

I'm trying to downgrade my LG G2 D802 32GB from KitKat to Jelly Bean, but I can't find the right firmware for my software version. I need the Jelly Bean firmware for a 32GB D80220b-BUO, or any others that are compatible and will not brick my phone. Does anyone know where I might be able to find such files?

Ultimately I want to use the KitKat 4.4.2 ROM from another country on my LG G2. I bought my phone in China and it doesn't have Google Services authorized on it, which makes the phone pretty crappy. Unfortunately it is already updated to KitKat and unrooted, so I need to downgrade it to Jelly Bean, then root it and then install the European ROM in order to get Google services enabled. Anyway, that's my plan, but I'm open to alternatives if you know of any.

Thanks in advance for any help with this.