NOTE: During configuration or flashing a device, the only that should be hooked to the device is the computer and power.

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Platform

Serial Num. = ?
FCC ID = KA2DIR601A1
CPU Type = Atheros AR7240-AH1A F52279. 1C 1012
MIPS Rev = ?
CPU Speed = 350mhz
Bus = ?
Flash Type = ?
Flash Chip = Winbong 25X32VFIG
Flash Size = 4MB
Max Firmware Size = ?
RAM Size = 32MB
RAM Chip = Zentel A3S56d40ETP
nvram Size = ?
Switch = ?
Port-based vlan = ?
802.1q vlan = ?
Ethernet Port Count = ?
Wired Standard = IEEE 802.3?
boot_wait = ?
bootloader = ?
Flash Card Socket/Type = ?
SD/MMC Mod Support = ?
MiniPCI slots = ?
PoE = ?
Power = ?
Color of LEDs = ?
Size = ?
USB = ?
Serial Port = ?
JTAG Port = ?
Supported by TJTAG/Version = ?
Special Features = ?

Radio

Wireless Radio = Atheros AR9285-AL1A D09277C 1017 
WLAN DSP processor = ?
Antenna Connector Type = ?
Wireless Standard = IEEE 802.11b/g/n
WiFi Operating Frequency = ?
 802.11n = up to 150Mbps
 802.11g = 6, 9, 12, 18, 24, 36, 48, 54Mbps
 802.11b = 1, 2, 5.5, 11Mbps
Radio cor_rev = ?
Radio Capabilities = ?

• D-Link DIR-601 A1 FCC ID: KA2DIR601A1 - @ DD-WRT
• DIR-601 A1 - Here are the flashing Instructions

CONFIRMED TO WORK ON A1 HARDWARE VERSION ONLY!

Download this file: ftp://dd-wrt.com/others/eko/BrainSlayer-V24-preSP2/2011/02-17-11-r16214/dlink-dir601a1/dir601a1-factory-to-ddwrt-firmware.bin

1. Plug a cable into the LAN port of your router. Never upgrade except with a LAN cable connected to your router from your computer, and make sure your firewall, virus protection and wireless are OFF in your computer.
2. On your router, hold the reset button down for 30 seconds. Yellow power light should blink orange and then all lights should return to normal.
3. Set a static IP on your computer of 192.168.0.9. If you don't know how to do this, you should not be messing with third party firmware.
4. Login to the router at 192.168.0.1. Admin is username and password is left blank. MAKE SURE YOU HAVE RETURNED TO FACTORY DEFAULTS
5. Go to the firmware upgrade page. Select the dir601a1-factory-to-ddwrt-firmware.bin that you downloaded earlier to upgrade
6. Hit UPGRADE.
7. WAIT FOR THREE MINUTES WITHOUT TOUCHING ANYTHING. TIME THIS!
8. An orange soccer ball like icon will light on the front of your router and this will stay lit.
9. Change your computer IP back to AUTO IP and AUTO dns.
10. Check your LAN connection status. You should have an IP on your computer in the 192.168.1.xxx range.
11. Logon to your router at 192.168.1.1
12. SELECT the username (make ALL the dots blue highlighted) and enter one that you will remember.
13. Select the password and enter one that you will remember, and then enter these and go in and configure your router.

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Restore to Factory Firmware Edit

(Taken from flashing instructions for DIR-615 rev D3, but I've verified it works for DIR601)

• set your computer's ip manually to: 192.168.0.X (not 1) AND set your subnet mask to 255.255.255.0.
• unplug the power cable to the router
• press the reset button and plug in the power cable when the power led flashes orange release the reset.
• go to 192.168.0.1
• Upload your original firmware and wait
• After update, the factory firmware saved my old settings so I connected to my previously set router IP.

JTAG PinoutsEdit

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JTAG RecoveryEdit

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Serial PinoutsEdit

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Hyper terminal Setup in Windows XPEdit

In Windows XP, Click Start Button - All Programs - Accessories - 
   Communication - HyperTerminal
Enter a name for the connection, Click ok
Choose com port you adapter is plugged into, Click ok
Set:
 Bits per second = 115200
 Data Bits = 8
 Parity = none
 Stop bits = 1
 Flow control = none
Click ok
Click File - Save As, and select a place to save it to so you 
             don't have to enter the settings again.

Putty Setup in Windows XPEdit

After installing putty, run it
 Serial line = The COM port your using for serial (ie. COM3)
 Speed = 115200
Click on Serial under Connection
 Serial line to connect to = same as above (Serial line)
 Speed (baud) = 115200
 Data bits = 8
 Stop bits = 1
 Parity = None
 Flow control = None
Click Session
 Enter a name for your connection under saved sessions
Click Save
Click Open

Serial RecoveryEdit

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 This section is in need of cleanup!

• D-Link DIR-601 Antenna Upgrade - DIY