Samsung S21 Ultra 5G SM-G998N U6 Fix Touch Problem 100% Tested Update Fi... Borsha Mobile All Flash File 100% Tested Update [ Firmware] OK Aug 25, 2024 Samsung Galaxy S21 Ultra 5G SM-G998N U6 Fix Touch Problem After Update OS14 100% Tested - Borsha Mobile Flash File 100% Tested Update [ Firmware] OK (bak2461.blogspot.com)