how flash samsung s21ultra 5G using odin

flash samsung
flash firmware
change csc
remove demo officiel from samsung and write imei
change full samsung system
repair stock system
repair hang on logo
remote service
samsung s21 ultra
G998b
كيفية فلاش سامسونغ
i download firmware from :
www.samfw.com
i use odin application to write firmware :
odin application
install drivers samsung modem
download mode way : volume (+-) and connect type-C cable to pc
comment flasher samsung