3Com V1905
Start the console session.
Plug in serial cable to device from PC COM1 port
Open PuTTY and select "Serial" connection type, change baud rate (Speed) to 38400 and leave other settings as default.
Do NOT plug power into the device yet.
Bypass authentication for booting up.
Use an ethernet cable to connect ports 1 and 2 to each other on the device, then plug power into the device.
After being powered on like that for 1+ minutes, power off the device, unplug the ethernet cable and power the device up again:
------ Performing the Power-On Self Test (POST) ------
UART Channel Loopback Test........................PASS
Testing the System SDRAM..........................PASS
Boot1 Checksum Test...............................PASS
Boot2 Checksum Test...............................PASS
Flash Image Validation Test.......................PASS
BOOT Software Version 1.0.0.3 Built 22-Apr-2007 12:42:23
Networking device based on 88E6218 with ARM946E-S.
64MByte SDRAM. I-Cache 8 KB. D-Cache 8 KB. Cache Enabled.
Preparing to decompress...
100%
Decompressing SW from image-1
100%
OK
Running from RAM...
*********************************************************************
*** Running SW Ver. 01.00.07 Date 20-Mar-2008 Time 16:26:46 ***
*********************************************************************
Type admin at the Login: prompt:
------------------------------------
-- Unit Standalone --
------------------------------------
Tapi Version: v1.3.3.1
Core Version: v1.3.3.1
…
Login:admin
You will be not be prompted for a password, just taken to the Select menu option# prompt.
Erase configuration.
Type the initialize command and confirm with y:
Select menu option# initialize
WARNING: This command initializes the system to factory defaults and causes a reset.
Do you wish to continue: (Y/N)[N] Y
deleteing startup configuration file...
deleteing certificate file...
deleteing Log file...
01-Jan-2000 01:03:21 %FILE-I-DELETE: File Delete - file URL flash://startup-config
Marking Initialize in NVRAM
01-Jan-2000 01:03:32 %INIT-I-Startup: Cold Startup
**************************************************
***************** SYSTEM RESET *****************
**************************************************
Copy all the output from the session into your records.
Right-click PuTTY's titlebar, from that dropdown menu click on "Copy All to Clipboard"
Open the file of record certifying the deconfiguration of this device and use CTRL V to paste all the output from PuTTY into that file. Formatting the text with a fixed-width font helps it look more readable.
End the session.
Close PuTTy.