With Android 13 rolled out on the Pixel 6, and Google posted an interesting update on their system images website, once you've flashed Android 13, you can't go back to old version.
This is still the case for anyone who wants a fully functional phone, but now, Google has published a 'developer support image' of Android 12 that allows developers to take back their phones even after an upgrade, meaning The developer's trademark on the image is that it's not fully functional, but it would be good enough to test the app.
The reason for the Android 13 unidirectional update is a loophole in the bootloader, the font is in 6 Pixel, 6 Pro and 6a.
so only those pixels got a unidirectional update, Android 13 has a bootloader patch, to prevent attackers from recovering the device bypass on me Patch, the company launched anti-rollback protection on the Pixel 6 and 60, Anti-rollback detonates a physical dead person inside the SoC.
There are many such fuses, and each OS version has the number of fuses to expect, if the number is too thin, it means Google has flagged this OS as insecure And old, and it won't boot again This Developer Support Image is a new area for Google, the company says this particular image for Android 12 fixes the bootloader error, and the valve counter has increased so that it continues to boot.
However, you can get any automatic updates, which are not certified by the Compatibility Testing Kit (CTS, CTS is a check that promises the operating system is unmodified, not rooted, and secure.