One Ui 2.5

nothing yet 😗

It's gonna arrive with sep security update. I'll u have now is to wait.

2.1 to 3.0 direct

January 2021

Thank you for contacting Samsung KSA 

kindly check from the device settings if there's any software updates and keep it automatic updates

or you can keep in touch in Samsung member app

also you use smart switch app : download it in your computer and connect your device and open smart switch and log in in your Samsung account any software available  will appear to you .

https://www.samsung.com/sa_en/apps/smart-switch/