As you know sometimes the entries in this blog are just for me (this is the best place to keep some things I do not want to forget), this one is one of those. Some months ago I bought a Samsung Y Duos (GT-S6102) in order to avoid carrying two mobile phones (company and personal one) always in my pocket (I lost my company device twice last year but, luckily, I also found it again). This samsung model is a dual SIM device with android 2.3, not very powerful but also not very expensive. I realized past month that there are already custom roms and kernels for that device. During my vacation I have been playing with them and, cos I am not a fan of these things, I am going to put here a bunch of links of how to perform typical Android tasks in that specific device.
CWM and Unroot
ClockworkMod Recovery (CWM) is a popular custom recovery for Android phones done by Koushik Dutta (Koush). It allows you to perform several advanced recovery, restoration, installation and maintenance operations on your Android device. Besides it is one of the most common ways used to gain root access, back up device data, install custom ROMs, kernels, themes, mods and so on.
An unrooted Android device consists in installing the su binary inside the system in order to make that some applications can run with root privileges.
The interesting links about those issues for my device are the following:
TechnoDUOS 1.5
TechnoDUOS is a custom rom and kernel for the dual SIM device introduced by a XDA developer forum member Millan.SIS (now there is another custom rom called Xperia-Duos). That rom is supposed to be better tweaked for my phone model.
Again some nice links:
DroidWall Modules
The DroidWall is just an Android Firewall based on iptables. In order to install it a rooted device (obviously the firewall needs root access) and some modules in the kernel are needed. The BDSky kelnel (TechnoDUOS kernel) does not have those modules but it supports init.d startup. So I added the DroidWall modules following this link (it is curious that this was my first intention, what a hell for such a tiny thing):
At least it is done, I have a rooted Galaxy Y Duos with a tweaked MOD and init.d kernel which loads the required modules to have the DroidWall application configured. It seems to work! I do not trust in Android (and even less in Android applications), so a firewall seems to be a good choice, I am also considering restricting some of them.
Cheerio!
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