Are you looking to back to EMUI, or are you just trying to get the latest security patch ?

Connect your Huawei phone to your PC via USB and open the official . Go to Update .

The official HiSuite should now "see" the version you entered in the Proxy as an available official update. Click and wait for the download to finish. Common Troubleshooting

Unlike custom ROMs, this method works on locked devices.

It bypasses newer security checks implemented in the latest HiSuite versions.

Ensure "Allow HiSuite to use HDB" is enabled in your phone's settings and that you have granted all necessary permissions.