Huawei B535-232 Custom Firmware |link|

Navigate to (stock firmware hides this). You will see a checkbox list of LTE bands.

Downloading firmware files from unverified third-party forums or file-sharing sites (like untrusted Google Drive links) poses major security risks. Modded files can contain backdoors or malware that compromise your local network. The Safer Alternative: Third-Party Applications huawei b535-232 custom firmware

Once the bootloader is unlocked, several community-developed tools facilitate the modification process: Navigate to (stock firmware hides this)