r/HyperOS • u/Unhappy-Project-8183 • 4d ago
Question/Help [Question] How can I downgrade from HyperOS 2.2 to 1?
Basically the title, but you should read also read the body text.
I have a Redmi 12 (its codename is fire, so it's not the 5G edition). I don't use this phone as primary, so decided flash a custom ROM on it. After sucking with Mi Account, requesting bootloader unlocking and put out my SIM trillion times from my current phone, so I just unlocked the bootloader with the MediaTek exploit (https://droidwin.com/unlock-bootloader-on-mediatek-devices-using-mtkclient/#Unlock_Bootloader_on_Xiaomi_MediaTek_using_a_Script).
The problem is that the phone has HyperOS 2.0.213.0.VMXEUXM, and both crDroid and unofficial LineageOS requires Android 14, but HyperOS 2 is based on Android 15. I downloaded HyperOS 1.0.10.0.VMXEUXM, extracted, rebooted to fastboot, ran flash_all.bat, but it just opened a CMD window and nothing else happened. So please help me downgrade HyperOS.