Applying update from TTY. Thought it might be worth sharing.
1. Save and close all application. 2. Logout [Eg. In KDE press Ctrl + Alt + Del and then click logout] 3. Press Ctrl + alt + F2 and switch to TTY2. You can also try Ctrl + alt + F3 for TTY3 if required. 4. Login on TTY2 5. Run nmtui (Ncurses based network manager gui to connect to Lan / Wifi.) 6. Run sudo pacman-mirrors -f 5 (Update mirrorlist with 5 fastest up to date mirrors) 7. Run sudo pacman -Syyuw (First only download all packages to manage breaking change during package installation) 8. Run sudo pacman -Syu 9. Done with update, Run systemctl reboot
I never use force or assume "yes" to conflicts. whenever in doubt prefer searching for solution on manjaro forum
Credits : @snake2903 for step 6. Updating mirrorlist with fastest 5 up to date mirrors.