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If the vulnerability is in the (flashable), OEMs can push an OTA. However, here is the catch: OmniUS runs before the OS. A user who has already unlocked via OmniUS can simply refuse the OTA, or flash back the vulnerable preloader.
Most MediaTek and some UniPhier bootloaders have a "preloader" or "DA (Download Agent)" mode. This mode listens for USB vendor commands. The vulnerability allows an attacker to send a specifically crafted USB control transfer that causes the bootloader to jump to a malicious payload loaded over USB RAM— the signature check on the main boot image occurs. omnius bootloader unlock
This creates a "Schrödinger's Security" state: The device is technically patched in the factory, but user-flashable firmware means the vulnerability is eternal for any device that shipped with it. We are moving away from hardware glitching (voltage spikes, laser fault injection) toward logical USB exploits like OmniUS. It democratizes unlocking. If the vulnerability is in the (flashable), OEMs
When you use OmniUS to unlock, you aren't just toggling a flag; you are often patching the keystore or sepolicy to allow a custom key to be injected. This means you can run an unsigned kernel. Most MediaTek and some UniPhier bootloaders have a
If you own a device with a MediaTek Dimensity 700, 800, or certain Helio G series chips, you likely have OmniUS access right now. You have the power to strip the carrier bloatware, install a firewall at the kernel level, and run a mainline Linux kernel.
