The is an older device. Some versions of its firmware have known remote code execution vulnerabilities (e.g., CVE-2017-17215). If you download firmware from an unofficial source, you risk:
Most HG532e units support a direct update through the web management interface. i--- Huawei Hg532e Firmware Download
If the automatic update fails or your router is offline, you can manually find files on official Huawei sites. : You can search for the model on the Huawei Software & Firmware Download page. The is an older device