Overall performance has been improved.
Stutters here and there which is expected as it is the first build.
Camera app is faster now.
Will have to check battery performance in the coming days.
Edit -
Here how to do it.
1. First of all backup all your data because device will factory reset multiple times. Also remove sd card as a precaution.
2. Dial *#272*imei# and select Aut and click on install.
3. Select sales and network change.
Device will factory reset. Immediately remove sim card before device turn off.
4. Your device will boot to Android setup screen.
Fast forward the setup, just skip everything, you dont need to sign in to google or samsung for now.
5. When on the homescreen, connect wifi, go to software information and make sure it shows AUT.
6.Check for updates and Android 12 ota should appear.
7.install it as usual.
After installation, insert your sim card in sim 1 slot and test the firmware if you want.
8. When you are satisfied, make sure your sim card is installed.
Reboot to recovery and perform a factory reset/data wipe.
9. When the welcome screen appears, leave it till a message appears to install according to your network provider. In my case Airtel.
It will show you 3 options
Sim 1
Sim 2
Keep current settings.
Choose sim 1.
Your phone will reset again and original INS will be installed.
Congrats, you have successfully installed Android 12.
