Is there a reason your friend wants to do this ?
I imported my N20 Ultra Snapdragon version from Hong Kong and it works well with its original software @tony1076
Custom Rom's can be applied but it would be wise to be very careful.
More information on xdadevelopers.com about custom rom's.
Disclaimer 》
Using a Custom Rom can bring about an unstable phone or it may not work properly if the process glitches or the wrong Rom is used.
It may stop Samsung Pay from working if the procedure trips your Knox Counter.
A person takes full responsibility if they perform this process and do so at their own informed decision.
Again the process may trip Knox and may affect the Samsung Warranty.
Samsung could levy a charge to put this right or deny support.
Daily Driver > Samsung Galaxy s²⁴ Ultra 512Gb ~ Titanium Black.
The advice I offer is my own and does not represent Samsung’s position.
I'm here to help. " This is the way. "
