Ensure "CUST PKG" and "Preload PKG" are checked in the Proxy UI. Run the Proxy, click "SETUP," then open HiSuite. Region

: If you are trying to roll back (e.g., EMUI 11 to 10), the standard proxy method may fail if you don't use the specific "Roll-back" feature within the app and include all three required packages. Steps to Resolve Re-verify URLs : Double-check that your firmware URLs in the HiSuite Proxy tool are for the correct device version and region. Toggle Options

(Ensure you tick the "CUST PKG" box in the proxy tool) Preload PKG URL (Ensure you tick the "Preload PKG" box) 3. Use the Correct HiSuite Version

Downgrading from the latest EMUI 11 can disable fast charging, Fastboot, USB connectivity, and test points on your device. In some cases, you may need to dial *#*#2846579#*#* , navigate to Background Settings → USB Port Settings , and select HiSuite Mode to restore USB functionality.

When using HiSuite Proxy, you often need three specific URLs: , Cust , and Preload .