The proxy sets up a local HTTPS server on your PC (usually 127.0.0.1:7777 ). It then modifies your Windows hosts file to redirect update.hicloud.com to this local address. When HiSuite makes a request, the proxy intercepts it and returns custom firmware information that you have loaded manually.
Example JSON snippet (adjust to your file format): hisuite proxy v313
: Downgrading from certain EMUI 11 versions may temporarily disable features like Fast Charging or USB connection until the device is updated back to a stable OTA version. for your device model using this tool? The proxy sets up a local HTTPS server