Differences between 3G and wifi-only firmware

[geekmaster]

I compared differences between ixtab's 5.1.2+extras, and his 5.0.0 (after updating to 5.1.2 and installing extras).

There are some differences (which actually make sense) that appear to be what causes 3G to not work in his 5.1.2 image.

There are two config files that are different.

Here are the files for working 3G:

/etc/kdb.src/yoshi/system/daemon/cmd/interfaces/interface2/hw_present:
RG002
40
<DATA>
1

/etc/kdb.src/yoshi/system/daemon/cmd/interfaces/interface2/force_down:
RG002
40
<DATA>
0

Here are the files for NOT working 3G:

/etc/kdb.src/yoshi/system/daemon/cmd/interfaces/interface2/hw_present:
RG002
40
<DATA>
0

/etc/kdb.src/yoshi/system/daemon/cmd/interfaces/interface2/force_down:
RG002
40
<DATA>
1

For a shorter path, /etc/kdb is a symlink to /etc/kdb.src/yoshi. (Thanks eureka!)

So, it looks like we should be able to enable or disable 3G at will by controlling those interface configs. Perhaps there is something similar to lock down wifi, for those who wanted to do that...

EDIT: Notice above that to enable 3G, you need hw_present=1 and force_down=0.

EDIT2: The firmware images discussed above can be found here:
http://ixtab.tk/kindle-touch-images.php

[geekmaster]

We can make a patch or update package that enables 3G, or disables it, as described above.

If you install 3G firmware on a wifi-only kindle, the settings menu "device info" shows 3G even though not present. Not only can we enable 3G if you installed wifi-only firmware in a 3G kindle, but we can also make it "not present" if you flashed 3G firmware to a wifi-only kindle.

The four files mentioned above (including the copies) are the only differences between wifi and 3G, and their file names and contents actually match their function.

[eureka]

Originally Posted by geekmaster

There are two config files that are different, and those two files have identical copies stored in two different directories:

\etc\kdb\system\daemon\cmd\interfaces\interface2\
\etc\kdb.src\yoshi\system\daemon\cmd\interfaces\interface2\

/etc/kdb is a symlink to /etc/kdb.src/yoshi.

[geekmaster]

Originally Posted by eureka

/etc/kdb is a symlink to /etc/kdb.src/yoshi.

Ahh... My linux box is apart at the moment.

That means we really only have two config files to deal with, which makes it even easier.

EDIT: I updated my first post, to show the symlink instead of "duplicate" directories (an artifact of using Windows to compare the image files). You can also see in your quote of my original post that the paths contained back-slashes (another Windows artifact) -- also fixed.

[twobob]

I can confirm

/etc/kdb.src/yoshi/system/daemon/cmd/interfaces/interface2/force_down
RG002
40
<DATA>
1

on my (wifi-only) 5.