How to Perform a DD-WRT Download via TFTP

Are you looking to download the popular open-source firmware, DD-WRT, onto your router? If so, this article will guide you through the process of performing an initial flash or recovery flash using the TFTP (Trivial File Transfer Protocol) method.

Before we begin, it's essential to note that not all routers are compatible with DD-WRT. Make sure your router is supported by checking the Supported Devices list on the DD-WRT website. For this article, we'll focus on the Asus WL-500xx series routers, which require additional steps for a complete and proper initial flash.

Timing Problems and Soft-Bricking

If your router isn't responding during the flashing process, it may be soft-bricked, meaning it's unable to boot with its current firmware. In this case, you'll need to use OEM (Original Equipment Manufacturer) firmware to recover your device. Be cautious when attempting a recovery flash, as improper procedures can further damage your router.

Preparation

To start the process, ensure that your PC is set up with a fixed IP address within the same network as your router. You can do this by going to Network and Sharing Center > Change adapter settings > Properties > Internet Protocol Version 4 (TCP/IPv4) > Use the following IP address: .

Next, download a TFTP client software for your PC and connect it via a network cable to one of your router's LAN ports. Plug in your router and wait for it to boot up.

Performing the Initial Flash or Recovery Flash

1. Start the TFTP client software and set it to use the same IP address as your router.

2. Connect to the router using a continuous ping (-t switch required in Windows).

3. Set the TTL (Time To Live) value to 100, which indicates that the application code has been reached.

4. Once you receive a TTL=100 ping response, start the TFTP client and upload the DD-WRT firmware file to your router.

5. If using a mini build for 4+ MB flash devices or micro build for 2 MB flash devices, select the appropriate file from the Supported Devices list or the device wiki.

Tips and Considerations

* For recovering a bad flash, you may need to use OEM firmware.

* Use the forum or device wiki for recommended files and troubleshooting guidance.

* Be patient during the flashing process, as it may take several attempts to successfully complete the procedure.

By following these steps, you'll be able to perform an initial flash or recovery flash using TFTP and download DD-WRT onto your Asus WL-500xx series router. Remember to exercise caution when working with firmware updates, and always refer to the official documentation for specific guidance on your device.

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