[Q] Difference between XL39H and C6802? topic

Hi,

I recently bought a Z Ultra off ebay and when I received it realised that it was the XL39H Chinese version. It doesn't have gapps and most features only work in Chinese.

I'm wondering whether I can just flash another country's C6802 firmware onto it, or is this not possible due to the different model numbers? Are there any hardware differences between XL39H and C6802?

Someone said on another post that XL39H is just a sticker on the box and the phone itself still says C6802, but in my case it says XL39H in About Phone and on the device itself...

Thanks for your help!! :)