Posted: Sun Jul 25, 2021 4:13 Post subject: how to edit firmware header in windows?
I have already tried looking around but it seems like this can only be done in a Linux enviroment. Is there anyway to do this in windows?
Like, How do I remove or modify a firmware header in windows? or do I really need to use linux for the task? _________________ For people who are new to the dd-wrt forums >> http://www.catb.org/~esr/faqs/smart-questions.html#rtfm
barryware wrote:
It takes a "community" to raise a router..
Internet Connection 1
Some Techicolor modem > Linksys WRT3200ACM
Internet connection 2
Ubiquiti Powerbeam Gen 2 > Netgear R9000
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I came to the conclusion that based on the responses I am receiving, this is something a programmer would most likely already know how to do or at least have some idea.
I mean how this user know that this was the header? All I can say myself is "I do not know".
Exactly how does one remove a firmware header in router firmware?
Theres probably a better way, but you can use the extract-firmware.sh script in the Firmware-Mod-Kit to extract the contents of a firmware .bin. Amongst the results will be a folder called image_parts that includes a header.img file. That should be what you are looking for.
Posted: Sun Aug 01, 2021 12:55 Post subject: Modifying firmware header
In HxD.
One side is in hexadecimal, the other in ASCII.
The offset column on the far left is also in hex. Counting up from 0. Modifying the header means usually copying the header from a factory firmware file (TP-Link, etc, right off their website), usually the first section before the characters switch to all 00s, in hex. Or some other repeating character over many lines.
Make sure to copy and overwrite paste (replacing the existing header) not adding a second header.
Go up to save as and save the file, make sure to add the appropriate extension on the end (.bin, etc). _________________ Before asking a question on the forums, update dd-wrt: Where do I download firmware? I suggest reading it all.
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Some dd-wrt wiki pages are up to date, others are not. PM me if you find an old one.
Atheros:
Netgear R7800 x3 - WDS AP / station, gateway, QoS
TP-Link Archer C7 v2 x2 - WDS Station
TP-Link TL-WDR3600 v1 - WDS Station
TP-Link 841nd v8 - NU
D-Link 615 C1/E3/I1 x 7 - 1 WDS station
D-Link 825 B1 - NU
D-Link 862L A1 x2 - WDS Station
Netgear WNDR3700v2 - NU
UBNT loco M2 x2 - airOS
Broadcom
Linksys EA6400 - Gateway, QoS
Asus N66U - AP
Netgear WNDR3700v3 - not used
MediaTek
UBNT EdgeRouter X - switch