Huawei HG255s

Overview
Huawei AV1HG255SM REV.A (HG255s-10)

Specifications

 * Wi-Fi: AC1200, 2.4GHz (300Mbps) + 5GHz (867Mbps)
 * 2x U.FL pigtail + internal PCB on-board antenna
 * 2x FSX (phone) port, internal DECT/CAT-IQ baze station
 * VoIP, DLNA, IPTV, IPv6 supported


 * CPU: TriDuctor VSPM340 @1GHz (Dual-Core ARM Cortex A9)
 * High-end xDSL Processor SoC For Multi-media IADs & Gateways
 * Multiple high-end WAN connectivity options: XDSL, Gigabit Ethernet
 * and USB 3.0 for LTE fixed-wireless modems.
 * Supports Gigabit dual-band concurrent Wi-Fi by dual PCIe interfaces,
 * multi GbE and VoIP & DECT interfaces with DSP accelerator.
 * 1GHz dual-core ARM Cortex A9 processor plus additional offload engines
 * and dedicated routing accelerator.


 * 5GHz Power Amplifier Module: RFFM4501
 * 5GHz 802.11an/ac Wi-Fi Front End Module
 * Integrated 4.9GHz to 5.85GHz Amplifier
 * SPDT TX/RX Switch, LNA with Bypass, Power Detector Coupler
 * POUT = 19.5dBm, 11a/n, 5V <3% Dynamic EVM
 * POUT = 17dBm, 11n, 3.3V 2.5% Dynamic EVM
 * POUT = 21dBm, 11a/n, 5V 2.5% Dynamic EVM
 * POUT = 17dBm, 11a/n, 3.3V 2.5% Dynamic EVM
 * POUT = 16dBm, 11ac HT80 MCS9, 3.3V, 1.8% Dynamic EVM
 * POUT = 18dBm, 11ac HT80 MCS9 5.0V, 1.8% Dynamic EVM

Forum threads

 * Main Subject HG255s
 * Huawei HG255s - WiFi Errors - Slow Throughput

Pictures
User Images 

Root user/Pass

 * Root / fbr_2015_Hua (not working in HG255sC163B037)

Firmware

 * V100R001C163B032 (old FW)
 * V100R001C163B029 (oldFW)
 * V100R001C163B025SP02 (old FW)
 * V100R001C163B022 (HG255s-10 oldFW)
 * HG255sC163B029 (old FW)
 * HG255sC163B033 (Most Used New FW) 2020/02
 * HG255sC163B037 (newest FW)

FW detail

 * UpTime":76396,"Manufacturer":"HUAWEI"
 * (ModemSVersion":"","DeviceName":"HG255s)
 * "ModemHVersion":0,"HardwareVersion":"VER.A"
 * ChipModel":"Broadcom", "FriendlyName":"ATP"
 * "PppoeUpTime":76336,"TR069ActiveData"
 * "SoftwareVersion":"HG255sC163B029"
 * "BootloaderVersion":"HISILICON1.0.0"
 * "ReleaseDate":"2017-10-11"
 * "BatchNumber":"V100R001C163B029"
 * "FirmwareVersion":"
 * "ManufacturerOUI":"00E0FC"