If your B525s-23a works stable on current firmware (e.g., version 11.189.63.00.141 or higher), do not update. If you experience weekly crashes or have specific ISP requirements (e.g., T-Mobile US band 71 support – which the B525s-23a does not have anyway), then proceed cautiously.
Example: Bands 3 (0x8), 7 (0x80), 20 (0x80000) → Hex sum = 0x80088 → Decimal = 524424. Huawei B525s-23a Firmware