Gateway's single or dual band access point with two ethernet ports. I only own the A/B/G version so I am unsure about the hardware configuration for the B/G model. The flashing instructions should be the same.

Note: This will void your warranty!

1. Remove the four obvious screws on the bottom of the case
2. Gently separate the case
3. You will see the serial header near the center of the PC board

Internal photo of the 7001 A/B/G model router.

There is an 4 pin header near center of the board The pinout is:

• Rx
• (no pin)
• VCC
• GND
• Tx

Baud: 115200 , 8 bits of data, no parity (8N1)

Unfortunately the firmware update feature in the Gateway software does not work with OpenWrt and Redboot's telnet has been crippled as it does not ship with a default IP address. To install OpenWrt you need to access the console via the serial port and upload OpenWrt with a TFTP server. It is assumed the user has basic networking and terminal experience. If you don't understand a concept or know how to change a setting (ie you computer IP) this should be easy to find in the Forum or Google.

Hardware

• Philips screwdriver to open the case
• TTL Serial Level Converter or compatible adapter
• Serial cable
• Ethernet crossover cable or Ethernet switch

Software

• TFTP server program
• openwrt-gateway7001-zImage
• openwrt-ixp4xx-squashfs.img

Determine how you will interface with the serial port in the 7001. This port is driven at TTL levels (3.3 volts) so it is not directly compatible with standard computer serial ports. For more information and a good write up on different TTL converter options see the NSLU2 wiki. please note the pin outs are different between the NSLU2 and the 7001

Once you have the appropriate interface you need to connect to the 7001 header, this can be done by obtaining a connector or simply wire wrapping. You will not need this for long, but do not short between pins or to anything else on the board.

With the serial port connected to your computer and the 7001 powered off open your favorite terminal program and connect on the serial port at 115200 Baud, 8 bits of data, no parity (8N1). Power on the the 7001 and you should see the boot sequence. Let this run to ensure everything is working.

With your terminal program still connected, cycle the power by removing and replacing the power cable. As soon as the boot sequence starts press Ctrl-C to enter the Redboot command line You should see

RedBoot> 

To view the default boot configuration enter

fconfig -l  

Run script at boot: true
Boot script:
.. fis load kernel
.. exec

Boot script timeout (1000ms resolution): 1
Use BOOTP for network configuration: false
Gateway IP address: 0.0.0.0
Local IP address: 0.0.0.0
Local IP address mask: 0.0.0.0
Default server IP address: 0.0.0.0
Console baud rate: 115200
DNS server IP address: 0.0.0.0
GDB connection port: 9000
Force console for special debug messages: false
Network debug at boot time: false
Default network device: npe_eth0
Network hardware address [MAC] for NPE eth0: 
Network hardware address [MAC] for NPE eth1:

notice the IP addresses are all 0.0.0.0, this is what is preventing telnet. To permanently change this enter

fconfig 

you will see

Run script at boot: true 

do not change

Boot script:

Enter the following script

fis load kernel
exec

Terminate with empty line

Boot script timeout (1000ms resolution): 5  

this is the number of seconds Redboot delays boot and waits for communication. Change to 5 to make it easier to connect

Use BOOTP for network configuration: false  

do not change

Gateway IP address:   

do not change

Local IP address: 192.168.0.1  

set Redboot's IP address (this is unrelated to the OpenWrt install) and will only be used to telnet in to make changes and upgrades

Local IP address mask: 255.255.255.0 

set the subnet mask

Default server IP address: 192.168.0.2  

set the server address you will upload OpenWrt from

Console baud rate: 115200   

do not change

DNS server IP address:   

do not change

GDB connection port: 9000  

do not change

Force console for special debug messages: false  

do not change

Network debug at boot time: false  

do not change

Default network device: npe_eth0  

do not change

Network hardware address [MAC] for NPE eth0: 0x00:0x00:0x83:0x38:0x50:0x02  

do not change

Network hardware address [MAC] for NPE eth1: 0x00:0x00:0x83:0x60:0x50:0x01  

do not change

Update RedBoot non-volatile configuration - continue (y/n)? y 

type y to save

... Unlock from 0x507c0000-0x507c1000: .
... Erase from 0x507c0000-0x507c1000: .
... Program from 0x01fd2000-0x01fd3000 at 0x507c0000: .
... Lock from 0x507c0000-0x507c1000: .
Redboot> reset 

reset the device
Now when Redboot initializes it will be listening at IP 192.168.0.1 on port 9000 for 5 seconds before it executes the boot script.

To continue to connect via Telnet make sure you press Ctrl-C to enter the Redboot command line as the 7001 reboots.

Ensure you are logged into the Redboot terminal via the serial console as instructed when you enabled Telnet access. Ensure your computer's TCP/IP address is set to 192.168.0.2 (the IP you set as the Default Server IP) and any networking devices besides your main ethernet connection are off (including wireless connections). Using a crossover cable or switch (not connected to any other devices) connect you computer to the 7001 ethernet port labeled LAN 2.

In your terminal program connected to Redboot via the serial port enter

Redboot> ip_address

confirm that Redboot is using the 192.168.0.1/255.255.255.0 if everything checks out try and ping your machine

Redboot> ping -h 192.168.0.2

wait a few seconds until you see

PING - received 10 of 10 expected 

If you see 0 of 10 expected you need to troubleshoot the connection, check your cabling, and the address of the computer your are trying to ping.

If that is successful, from your computer ping the 7001 at 192.168.0.1 With a successful ping you have now enabled the ability to telnet into the 7001.

Let's double check that telnet is working before starting the OpenWrt install. With your favorite telnet application telnet to 192.168.0.1 port 9000 you should receive the Redboot prompt.

For more information about Telnet and Redboot please read the NSLU2 wiki on Redboot Access