You need to flash a "Channel firmware" (e.g., from a general European region). Search for "B525s-23a Unlock Firmware C500" – this converts any carrier-locked unit to unbranded international firmware.
Check the serial number sticker on the back of your router – the hardware revision (e.g., H186) will determine exactly which firmware path you must take. Huawei B525s-23a Firmware
: Firmware updates often patch exploits related to the web management interface. Default Credentials : Standard firmware often uses or a unique key printed on the label. Signature Verification You need to flash a "Channel firmware" (e
A: Only if you first unlock the bootloader. Otherwise, the signature check will fail. the signature check will fail.