Just download one ui 4 for your device from the website SamFw.com while downloading one ui 4 please note the binary number for your os. Download same one ui 4 os with same binary number match with your phone model. Then install ot from odin app via laptop to ur phone. Do not turn off laptop while installing os or do not disconnect cable while installing os. I prefer you dont do this. With this method you can get one uo 4 in your phone but you may loss the warrenty of your device.
