questions about Rooting G2 MINI d620r Italian TIM branded topic

few questions about branding ,how to get of branding logo and unwanted brand apps
i have lg g2 mini d620r
its branded by Italian operator TIM logo but not locked
i have alot of unwanted TIM related apps that i cannot uninstall
so can i flash stock italian ROM or any other region stock ROM and do i need to unlock bootloader?
and also can i try rooting it with SD card update.zip folder method ?

thanks alot in advance