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ringerc · 01-23-2011, 09:45 AM

(Edit: This is only an incremental patch on the main firmware, not a full firmware download. Sigh. Still need a firmware image.)

The URL for the 1.7.4 update is:

http://download.kobobooks.com/firmwa...rade-1.7.4.zip

How to get the current firmware URL from the server:

You can find out the update URL by capturing the wifi traffic of a Kobo with an older firmware when it connects to the network. Use wireshark with the capturing machine's wifi card in monitor mode, or capture the traffic at the router. If you capture off wifi, you'll need to enable 802.11 decryption in Wireshark's protocols->802.11 preferences and enter the key of your network.

In your network capture, look for a request like:

POST /MobileRequest.ashx HTTP/1.1

and in the HTTP/XML response to it you'll find something like:

<UpdateURL>http://download.kobobooks.com/firmwares/kobo2/kobo2-upgrade-1.7.4.zip</UpdateURL>

If you don't have a Kobo with an old firmware, you can achieve the same effect by recording the POST request from an up-to-date Kobo, saving it, modifying it so that <ApplicationVersion>1.7.4</ApplicationVersion> instead reads (eg) <ApplicationVersion>1.6.0</ApplicationVersion>. Because changing the length of the request will corrupt it, you're best off using `sed' to do it. Eg:

sed -e '/^Accept-Encoding/d' -e 's/1.7.4/1.6.0/g' request.txt > request-mod.txt
nc mobile.kobobooks.com < request-mod2.txt > response-mod2.txt

The command deletes the request header that asks the server to gzip the response (for easier reading) and changes the version the "Kobo" announces its self to be running when it connects to the server.

01-23-2011, 09:45 AM	#4
ringerc Enthusiast Posts: 31 Karma: 64 Join Date: Jan 2011 Location: Australia Device: Kobo	Firmware URL (Edit: This is only an incremental patch on the main firmware, not a full firmware download. Sigh. Still need a firmware image.) The URL for the 1.7.4 update is: http://download.kobobooks.com/firmwa...rade-1.7.4.zip How to get the current firmware URL from the server: You can find out the update URL by capturing the wifi traffic of a Kobo with an older firmware when it connects to the network. Use wireshark with the capturing machine's wifi card in monitor mode, or capture the traffic at the router. If you capture off wifi, you'll need to enable 802.11 decryption in Wireshark's protocols->802.11 preferences and enter the key of your network. In your network capture, look for a request like: POST /MobileRequest.ashx HTTP/1.1 and in the HTTP/XML response to it you'll find something like: <UpdateURL>http://download.kobobooks.com/firmwares/kobo2/kobo2-upgrade-1.7.4.zip</UpdateURL> If you don't have a Kobo with an old firmware, you can achieve the same effect by recording the POST request from an up-to-date Kobo, saving it, modifying it so that <ApplicationVersion>1.7.4</ApplicationVersion> instead reads (eg) <ApplicationVersion>1.6.0</ApplicationVersion>. Because changing the length of the request will corrupt it, you're best off using `sed' to do it. Eg: sed -e '/^Accept-Encoding/d' -e 's/1.7.4/1.6.0/g' request.txt > request-mod.txt nc mobile.kobobooks.com < request-mod2.txt > response-mod2.txt The command deletes the request header that asks the server to gzip the response (for easier reading) and changes the version the "Kobo" announces its self to be running when it connects to the server. Last edited by ringerc; 01-23-2011 at 09:55 AM.