Anyone here knows how I can get the Korean dictionary from the Korean devices to another ROM/firmware?
Yes, sort of...
I use the Korean dictionaries quite often here in Seoul,
the dictionaries in the Korean phones are just apps, not really integrated in the ROM/Firmware. although I have not done it, I have run across several apps that (said) they will rebuild the .APK file. If i remember correctly, those apps are BlackMart Alpha, and Lucky Patcher. Others might do it also...
but a more simple way is to just download the Korean dictionary apps. the dictionary with all Korean galaxy phones is called YBM DioDict by Diotek.
You can pay for it on Google Play, or steal it from BlackMart and/or Aptoide