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toh:huawei:hg255d

Huawei HG255d and HG256

This device is NOT RECOMMENDED for future use with OpenWrt due to low flash/ram.
DO NOT BUY DEVICES WITH 4MB FLASH / 32MB RAM if you intend to flash an up-to-date and secure OpenWrt version (18.06 or later) onto it! See 4/32 warning for details.

1) This device does not have sufficient resources (flash and/or RAM) to provide secure and reliable operation.
This means that even setting a password or changing simple network settings might not be possible any more, rendering the device effectively useless. See OpenWrt on 4/32 devices what you can do now.

2) OpenWrt support for this device will end after 2019.
19.07 will be the last official build for 4/32 devices. After 19.07, no further OpenWrt images will be built for 4/32 devices. See OpenWrt on 4/32 devices what you can do now.

HG255D is a gateway from ChinaTelecom OEM by HuaWei.

Supported Versions

Hardware Highlights

Model CPU Ram Flash Network USB Serial JTag
HG255D Ralink RT3052@384Mhz 32MiB 16MiB 1 x WAN 4xLAN Yes Yes Yes
HG256 Ralink RT3052@384Mhz 32MiB 8MiB 1 x Giga WAN 4xLAN Yes Yes Yes

HG256 use a RTL8211CL Giga PHY for WAN.

Installation

Hardware

Info

Instruction set MIPS
Vendor Ralink
bootloader U-boot-1.1.4
System-On-Chip Ralink RT3052
CPU @Frq MIPS 24K @384 MHz
Flash Chip MX29LV640(HG256) S29GL128P(HG255D)
Flash size 8 MiB (HG256) 16MiB (HG255D)
RAM size 32 MiB
Wireless Ralink APSoC RT2860 b/g/n 2T2R (integrated)
switch Integrated 6 Port Fast Ethernet Switch
USB Yes (1 Port)
Serial Yes
JTAG Yes

Serial

port.serial general information about the serial port, serial port cable, etc.

How to connect to the Serial Port of this specific device:
Insert photo of PCB with markings for serial port

Serial connection parameters 57600, 8N1

JTAG

port.jtag general information about the JTAG port, JTAG cable, etc.

How to connect to the JTAG Port of this specific device:
Insert photo of PCB with markings for JTAG port

Tags

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toh/huawei/hg255d.txt · Last modified: 2019/02/12 21:16 by tmomas