设备型号：华为MA5626-8
#display version
VERSION : MA5626V800R308C00
PATCH : SPC500 SPH505 HP5105
PRODUCT MA5626准备工作：超级终端（XP自带、win7下可用secureCRT、Xshell、putty）、tftp、串口连接线、空密码库文件（文末提供下载）
设备的lan1口连接电脑的网口，本地连接设备ip为10.11.104.11，子网掩码为：255.255.255.0，默认网关：10.11.104.2
操作步骤：
1、用串口连接线连接好设备然后打开超级终端连接串口
2、打开设备电源
Copyright (c) 1998 - 2011 by Huawei Technologies Co.,Ltd.
All Rights Reserved.
The last update date of base BIOS B is : Jan 4 2011 09:43:09
===============================================================
BOARD INFORMATION :
CPU: ARM Integrator - ARM1176JF (ARM). Processor running at 533Mhz
256M bytes DDRAM, 64M bytes flash memory installed on board
Baudrate of serial channel is 9600bps
Board's LAN IP address is 10.11.104.2
Board's LAN Subnet mask is 255.255.255.0
Board's LAN MAC address is 70:7B:E8:53:BE:D7
===============================================================
System is booting from base BIOS...
Base BIOS version is 200
Press <D> key to stop auto-boot 0当出现
Press <D> key to stop auto-boot
时按下D键
Main menu:
==============================================
0 Boot from flash
1 Load files
9 Reboot system
Please enter a choice : 1
选择1
SubMenu: Load files
==============================================
0 Back to main menu
1 Download program file to flash
2 Download Data file to flash
3 Download basebios file to flash
4 Download cpld file
5 Download packet file
d Download program file to ddram
6 Download updatetool file to flash
7 Download equipment file to flash
Please enter a choice : 2选择2
Please select load mode[default: 1 -- TFTP load mode]:
============================================
0 Xmodem load mode
1 TFTP load mode
Q Quit
Please enter your choice:1选择1
Board IP address : [10.11.104.2]
Board mask address : [255.255.255.0]
TFTP server IP : [10.11.104.1] 10.11.104.11
File name : [db_sd5103.dat] 5626.dat
You will download file '5626.dat' from TFTP server 10.11.104.11,
are you sure? (y/n) [y]在Board IP address和Board mask address行直接回车，在TFTP server IP 输入TFTP服务器地址，在File name输入文件名
are you sure? (y/n) [y]输入y开始下载，下载完成后返回菜单，选择0然后选择9重启。重启完成后，使用默认用户密码root、mduadmin就可以登录了。
登录后用#erase flash data
删除全部设备
#reboot system
重启
空密码库文件：http://www.liangchan.net/liangchan/9469.html
或者留下邮箱我发送文件给你