Flashing the wrong firmware (e.g., B535-932 firmware on a B535-232) will brick your router. Verify your hardware version first.
If you are hesitant to flash custom ROMs, you can try these "better-lite" adjustments first: huawei b535232 firmware better
Firmware updates fix critical security vulnerabilities and expired web certificates that can block access to management pages. Flashing the wrong firmware (e