Joinsubscribers and get a daily digest of news, geek trivia, and our feature articles. Assuming you are familiar with those topics, keep reading. Keep in mind that this guide is a little more technical, and beginners should be careful when modding their router.
The firmware modification kit enables one to make modifications to the firmware without compiling it from source. Making changes this way, with the aid of the provided scripts, becomes a simple matter of downloading, replacing and deleting some files. In addition, this method has the added advantage of relieving you from the JFFS dependency for packages installation, which for routers with only 4MB of flash is a real problem. Picture by publicenergy.
Once you have followed this procedure it should be relevantly simple to adapt it for other packages installations. Warning : Tread lightly… keep in mind that incorrect usage of the modification kit, can leave you with a router that needs de-brick-ing as in turn it into a useless brick. The firmware modification kit has some dependencies for it to compile and work. The first thing to consider is which version you want to use?
In order to make it easier to keep track of what version we are using, rename the downloaded file to represent its version number:. In order to be able to change files within the firmware we need to extract its content into a temporary directory.
The syntax of this command is:. Note: The first time you run this command, it builds the mod-kit tools on your system. Now that the firmware is extracted we can install the packages to it. In general, the procedure is to download the package and its dependencies in the form of an ipk file from the openWRT repository. Once downloaded install them into the extracted firmware using the provided script. Knockd is a daemon that listens to communication events at the link layer for sequences then acts on them.
Using this technique you could trigger the server to perform any sort of operation you need of it remotely across the internet without exposing your home network. We promised you back then that we will show how to configure this for DD-WRT and we will now deliver.
This is mainly useful if your going to create scripts on the router that you would like to receive feedback on their operation via email. Gmailyou have to install the openSSL pakage as well. Configurations There is a limitation with the SSMTP package, that it is not possible to invoke it with an alternate configuration file.
Because the firmware is read-only when its on the router, that means that out of the box we can only hardcode the configuration into the firmware. To that end, both Jeremy the firmware mod-kit creator and myself reached the conclusion independently if i may humbly add that the only sane way to do this would be to:.
To do this, delete the ssmtp directory that was created by the ipk installer:. An init script While it is completely possible to not inject this script into the firmware and run it as a startup script later on, I feel its appropriate to put it here if only as an example for future use. Take note of the NVRAM waiting variables in the script, it is our responsibility to give them something to work with after we have installed our modified firmware on the router.
Now that everything is in place, it is time to re-package the modified firmware into a compressed binary that we can flash to the router. Note : if your using a regular, non TLS using, smtp server the port to use is 25 instead of Because we used the -vvv option for extra verbosity, the output of this command should look like:.
Modifying The DD-WRT GUI
Linux extends life, Linux expands consciousness… Linux is vital for packet travel. The Best Tech Newsletter Anywhere. Joinsubscribers and get a daily digest of news, comics, trivia, reviews, and more. Windows Mac iPhone Android.The Firmware Mod Kit allows for easy deconstruction and reconstruction of firmware images for various embedded devices.
In order to use the Firmware Mod Kit, you must have a subversion client, standard Linux development tools gcc, make, etcthe python-magic module, and the zlib and lzma development packages.
If you are running an linux distro that use apt-get, e. Ubuntu or Debian, use:. For other distros, you should install the equivalent packages using your distro's package manager. The Firmware Mod Kit is only supported on the Linux platform. The Firmware Mod Kit is a collection of utilities and shell scripts. The utilities can be used directly, or the shell scripts can be used to automate and combine common firmware operations e. The core scripts to facilitate firmware operations are listed below.
Primary scripts: Script Description extract-firmware. Secondary scripts: ddwrt-gui-extract. The Firmware Mod Kit uses a 'hard coded' working directory of 'fmk'.
The extraction script extracts to this folder, and the rebuild script rebuilds from this folder. Allowance of alternate working directories is supported for some operations, but not all. We'll be expanding that in the future. For now, if you have multiple working directories, we suggest you rename the ones you're not currently operating on. Currently, extract-firmware.
However, old-extract. Usage for both extract-firmware. By default, output from extract-firmware. Which build script to use is dependant on which extraction script was used.
If you extracted a firmware image with extract-firmware. Likewise, if old-extract. The new firmware generated by build-firmware.These docs may no longer be accurate. Description II. Why is this useful? Where to get the kit IV. Requirements V. Compatibility VI. Acknowledgements and more IX. Links X. Revision history. Description This kit gives the user the ability to make changes to a firmware image without recompiling the firmware sources. It works by extracting the firmware into its component parts, then extracting the file system image assuming its in one the supported formats.
Firmware Mod Kit
The user can then make modifications to the extracted file system, and rebuild the firmware image. Although this kit completely automates the process, it is also useful for those who need a handy collection of utilities to manipulate firmware images.
The following utilities are included in this kit, along with scripts to automate their use:. This kit doesn't just collect existing tools, it also offers new ones and modifications to existing ones.
Custom code currently is:. Currently TRX and uImage headers are supported. This tool wasn't officially made available until squashfs 3.
A list of some of the many reasons this might be desired are:. The best way to download and use this kit is to check out the sources from the repository. The automated scripts all automatically build the executables, and the sources. It is easy as downloading something and using it that way.
Also, if you are unable to use a simple SVN checkout, then it is likely that this kit is a danger to you because it is for advanced users. All of the many OpenWrt packages should work with OpenWrt images and many other firmware images. I've worked to make sure the requirements are low enough for anyone to use this kit.
However, to reduce distribution costs and better represent the multi-platform capabilities of this kit, the binary tools in the kit do automatically build themselves the first time you run one of the scripts. The few requirements are all basic items that everyone has easy access to:. The kit is probably not far from compatibility, but easier to just install a linux VM.
Any TRX style firmware image format should that uses squashfs-lzma as a root file system work fine. Firmwares that use regular zlib squashfs or unsupported file systems will work if the steps that extract the file system and rebuild the file system are tweaked. Instructions I've scripts that simply and abstract the firmware modification process.Professional Support Community Contact.
I've tested Knoppix for compiling sources like in Wiki descripted but i've no result. I'm trying to compile v23 sp1 micro but i'm full of errors. Can anyone help me? Your own the right track with using debian, the Ubuntu is just a debian fork anyway and so is Knoppix. My first guess would be that you have an old version of a lib and you need to update it. Hi guyz, Just check this thread and see what dependencies you are missing I can enter a script that someone else compiles for me, but thats' the extent of it.
I downloaded Knoppix a while back someone, somewhere said tobut I have no idea what to do with it now. You say one should install Debian or Ubuntu Do I create a dual boot system and put Linux on one partition or disk and leave Windows on another?
What's the best way to install it and be able to learn while still having my Windows PC. I need details, not cryptic answers from experts who think everyone else is an expert. I know that's easy to do. I start talking medical terminology to people and they look at me like I'm speaking Greek I actually am, kinda.
I forget that not everyone speaks that language as freely as I do. Please remember that about those of us that don't speak Linux like you do. Linksys WRT54G v. Then you can have both windows and linux running at the same time. In Debian. If i install the newer version, is it the same things? Excuse me I've found it For those curious, I've moved on from this project to another one I find more significant and interesting. There might be more updates to the Firmware Mod Kit, who knows, but I don't plan any.
So, what is the new project? I, as well, am very interested.Many of the website's visitors want to find out if a specific router is supported and which files they need to download to install dd-wrt. Many of them were contacting us asking if their router is supported or which of the many files in the downloads sections is the right one. With this router database we want to give to the users a simple tool that allows an instant search for the routers and a fast solution for finding more information and the related downloads.
We hope you like it - feel free to give us feedback and suggestions. For those looking for a complete list or search features by hardware specs we are working on extending the router database to provide these features.
But please take care - everybody can edit the information there so we cannot prove that they are correct in every case. Professional Support Community Contact. Router Database Search terms You can search by manufacturer, model, etc. Show only devices available preflashed. For users interested in DD-WRT but afraid of flashing a router due to concerns about warranty and bricking, FlashRouters offers pre-flashed routers with recent, stable DD-WRT releases for purchase Introduction Many of the website's visitors want to find out if a specific router is supported and which files they need to download to install dd-wrt.
If nothing happens, download the GitHub extension for Visual Studio and try again.
The Firmware Mod Kit allows for easy deconstruction and reconstruction of firmware images for various embedded devices. In order to use the Firmware Mod Kit, you must have a subversion client, standard Linux development tools gcc, make, etcthe python-magic module, and the zlib and lzma development packages. If you are running an linux distro that use apt-get, e. Ubuntu or Debian, use:. For other distros, you should install the equivalent packages using your distro's package manager.
The Firmware Mod Kit is only supported on the Linux platform. Using the Kit Kit Executables. The Firmware Mod Kit is a collection of utilities and shell scripts. The utilities can be used directly, or the shell scripts can be used to automate and combine common firmware operations e. The core scripts to facilitate firmware operations are listed below. Primary scripts: Script Description extract-firmware. Secondary scripts: ddwrt-gui-extract.
The Firmware Mod Kit uses a 'hard coded' working directory of 'fmk'. The extraction script extracts to this folder, and the rebuild script rebuilds from this folder. Allowance of alternate working directories is supported for some operations, but not all.
We'll be expanding that in the future. For now, if you have multiple working directories, we suggest you rename the ones you're not currently operating on. Extracting Firmware. Currently, extract-firmware. However, old-extract. By default, output from extract-firmware. Re-Building Firmware. Which build script to use is dependant on which extraction script was used. If you extracted a firmware image with extract-firmware.
Likewise, if old-extract. The new firmware generated by build-firmware. The optional -nopad switch will instruct build-firmware.
The optional -min switch will use the maximum squashfs block size of 1MB. This will decrease the firmware image size at the cost of additional CPU and RAM resources utilized on the target device. Do not use this switch unless you must. This is a very large block size for embedded systems. The original firmware squashfs block size is preserved on rebuild, and the original block size should be the one used unless you are sure you know what you're doing. Too large a block size may appear to work fine, but runtime performance of the firmware may suffer in all or some loads.
This is automated by the ddwrt-gui-extract.The kit works by extracting the firmware into its component parts, then extracting the squashfs-lzma based file system other file systems can be supported with tweaks. The user can then make modifications to the extracted file system, then rebuild the firmware image. I've worked hard to make sure the requirements are low enough for anyone to use this kit.
However, to reduce distribution costs and better represent the multi-platform capabilities of this kit, the binary tools in the kit do automatically build themselves the first time you run one of the scripts. The few requirements are all basic items that everyone has easy access to:. Debian Lenny, Ubuntu, Linux Mint, etcissue this command in a terminal:. Any cybertan style firmware image format that uses squashfs-lzma as a root file system should work fine.
Firmware that uses regular squashfs or other file systems i. As is, it is compatible with the following:. I may extend default support to cramfs, regular squashfs, and older squashfs and squashfs-lzma versions if there is sufficient demand. OpenWrt, this kit is of less use. I've written two scripts that simplify the process considerably. Basically, it's a one-step process to extract the firmware, and a one-step process to rebuild the firmware. You must run this tool from inside the directory it exists in.
It doesn't matter which firmware image you supply, i. These images are usually all the same and differ only in the header format. The rebuilding process will create images for the various models. Modifying the firmware is simple.
Here are the subfolders of this directory:. After you're done making changes, rebuild the firmware. Packages are pre-built collections of files pertaining to a set of software. Example use:. Rebuilding the firmware is as easy as extracting it.
Building DD-WRT from source is difficult and according to the text here definitly not working on first try.DD-WRT - Linksys E1200 - Firmware Upgrade - FLASH
You will see lots of strange errors and many confusing install-scripts. The forum is full of people who were not able to make this install-procedure running through. The infos in the forum is much newer than these here, but also very confusing and mixed up. Brainslayer does not have the time to do everything. If this happens and I don't update them, please take the time to update them if you are sure your changes are appropriate.
It should work on any reasonably modern machine with basic development tools installed. You can also visit the github mirror of dd-wrt for alternate download options This is a just a mirror, pull requests on github will not be merged.
Please be aware that the repository contains the sources for several linux kernel versions for each hardware platform, so be prepared for a very long download 18G.