Tutorial Downgrade Samsung M21 (Android 12 One UI 4.1 ke Android 10 One UI 2.0 )
Samsung M21
Okay, so this time I'm going to downgrade my Samsung M21 from Android 12 to Android 10 (One UI 4.2 - to One UI 2.0). As long as the binary version is still 2, it can still be downgraded to Android 10. The requirement to downgrade to Android 10 is to ensure the Android 12 and 10 binary versions are the same. If the binary versions are different, you can't downgrade.
What binary version does our phone have? You can check it in Settings - About Phone - Software Information - Baseband Version.
For example: M21 Android 11 (One UI 3.1): M215FDDU2BUB6
M21 Android 10 (One UI 2.5): M215FDDU2ATJ5
So U2 means binary version 2
The binary version can be upgraded but not downgraded.
You can use this method on almost all Samsung phones; the only difference is the risk, otherwise the method is exactly the same. For those of you who want to downgrade but are afraid of clicking the wrong button, I offer a remote control service. You only need a PC and an internet connection.
Website to download free full-speed Samsung firmware: https://samfw.com/
Samsung USB driver: https://developer.samsung.com/android...
Latest Odin: https://www.androlite.com/2019/12/dow...
After updating, you'll regret downgrading again. Here's how: • Tutorial Downgrade Samsung M21 (Android ...
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