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Huawei 4G LTE CAT 6+ Wi-Fi Router (B622-335) Official Firmware...[Download]
B622-335 11.0.5.51(H470SP29C00)_FirmwareSoftware_general_05019CEX.zip
B622-335 11.0.5.51(H470SP19C314)_FirmwareSoftware_general_05019ATD.zip