Default [Q] SHV-210S Question

Hey all, so I'm using an shv-210S here in Korea, but I actually use KT service. The phone operates fine, but there are some annoying things like, not being able to use wifi hotspots on subways/buses, and not being able to receive OTA updates.

So my question is, is it possible to flash a shv-210K rom onto my shv-210S device? As far as I know, the hardware is near identical[?]. Anyway, any help would be appreciated. Thanks!