One UI 4.0 Beta 3 has shown substantial improvements on the S21 Ultra

[StepBrObiwanKenobi]

So I loaded up One UI 4.0 beta 3 on my S21 Ultra. Have noticed quite a substantial improvement in overall system stability as well as improved performance.  Can't wait to see the polished product 

[Mectron]

Thanks for all the info. Would you be willing to do a step by step guide on how you side loaded it? And how you update since you have to do it manually?

[StepBrObiwanKenobi]

https://technastic.com/frija-samsung-firmware-download-tool/

https://samsungodin.com/

https://forum.xda-developers.com/t/oneui-4-0-public-beta-download-and-install-in-here-exynos.4333281...

https://developer.samsung.com/android-usb-driver

https://forum.xda-developers.com/t/official-tool-windows-adb-fastboot-and-drivers-15-seconds-adb-ins...


Here's all the relevant links to the tools needed for it as a start. Head and download all of them .install the drivers. Extract Frija and Odin to their own folders. Install adb and fastboot drivers

[Mectron]

Thanks a mil. I see on the xda guide they download the file there and then only use adb to load it. Is there a difference between that and using frija, odin etc?

[StepBrObiwanKenobi]

Frija you use to download the German software which is the same as the Global One UI 3.1 you have the load the absolute latest one UI 3.1 build for your phone

So extract all. Use the tool . Enter your model number and the CSC code : DBT. That's the German/Global code. Upon downloading extract the files and use Odin to update the phone. Then you can use adb to sideload Betas 1/2/3. Rename each beta yo update.zip as you go through each one

[StepBrObiwanKenobi]

Odin is what you use to update your One UI 3.1 to the latest build.

ADB is what you use to sideload the betas. After each sideload please complete a full boot then load the next beta

Also rename each beta to update.zip before you run adb sideload

[Mectron]

Heya bud. Decided to try it out today. Wish me luck ^^. When you say do a full boot is that a restart or a factory reset?

[StepBrObiwanKenobi]

After you apply each update it'll reboot. Let it reboot all the way into the phone then bacl to recovery

[Mectron]

Getting a 'this device has unexpected build date' error when loading the beta with adb. Seen a few people online who had the same error but don't see a solution yet. Are you running the same international as mine (Pic attached)?

[StepBrObiwanKenobi]

Use Frija tool to Grab the latest German varient . Their region code is DBT. AUHD is the last 4 digits