ASUS is reportedly telling customers they can no longer unlock the bootloader on their phones, including the Zenfone 9 and Zenfone 10.
Update from Asus
The service team reply misunderstood the situation. Unlock tool is unavailable at this moment but we are allowing the possibility to unlock, please stay tuned.
**TL;DR
ASUS has apparently withdrawn the ability to unlock the bootloader on its phones.
As per the company’s technical support team, Zenfone 10 and Zenfone 9 users won’t be able to root their phones.
Some here are mixing bootloader unlocking with rooting. They're not the same thing.
Asus broke bootloader unlocking, so you can only use the original ROM in the original state. You can't install a custom ROM or flash something like Magisk to root your device.
You can unlock without rooting or without installing a custom ROM. You can install a custom ROM without rooting. You can use stock and root. And you can use a custom ROM and root. But all this is only possible if you can unlock the device's bootloader.
Also, something I don't see people discuss enough: for security, you also need to be able to re-lock the bootloader after installing a custom ROM. Otherwise anyone can inject code into the system partition if they have physical access to your device, which would also compromise your encrypted storage. So if there's no way to reverse the bootloader unlocking, that's also bad.