If you are looking for instructions to:
- change over SM-G977N (South korean) to SM-G977B (Global)
- change Korean language to English in download mode
this video will offer you a useful guide about how to convert Samsung Galaxy S10 5G G977N to G977B multi language OS11:
This is a fully tested method of flashing the device‘ s firmware, without any extra work.
A multi language OS11 is an adaptable console for Android clients who wish to type messages, create messages and by and large really like to involve them notwithstanding English on their telephone.