I am new to I 9100, need info, pls. - Galaxy S II Q&A, Help & Troubleshooting

I sold my exxellent Htc Desire s, and bougt SGS 2.
Info about phone says :
Android version 4.0.3 ,
Baseband I9100XXLPS,
Kernel 3.015-I9100XWLP7-CL340913,
Build IML74KXWLP7.
I wish to download original all thing above for my backup .
Where is to download , and what is baseband,kernel and build ?
What is Pda, csc , .... ?
Thank you.

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bora61 said:
I sold my exxellent Htc Desire s, and bougt SGS 2.
Info about phone says :
Android version 4.0.3 ,
Baseband I9100XXLPS,
Kernel 3.015-I9100XWLP7-CL340913,
Build IML74KXWLP7.
I wish to download original all thing above for my backup .
Where is to download , and what is baseband,kernel and build ?
What is Pda, csc , .... ?
Thank you.
Click to expand...
Click to collapse
Kernel
When software needs the hardware to do anything, it sends a request to the kernel. And when we say anything, we mean anything. From the brightness of the screen, to the volume level, to initiating a call through the radio, even what's drawn on the display is ultimately controlled by the kernel. For example -- when you tap the search button on your phone, you tell the software to open the search application. What happens is that you touched a certain point on the digitizer, which tells the software that you've touched the screen at those coordinates. The software knows that when that particular spot is touched, the search dialog is supposed to open. The kernel is what tells the digitizer to look (or listen, events are "listened" for) for touches, helps figure out where you touched, and tells the system you touched it. In turn, when the system receives a touch event at a specific point from the kernel (through the driver) it knows what to draw on your screen. Both the hardware and the software communicate both ways with the kernel, and that's how your phone knows when to do something. Input from one side is sent as output to the other, whether it's you playing Angry Birds, or connecting to your car's Bluetooth.
A baseband is the software that connects your phone to your network. The benefits of updating it are more signal reception, which means a lot faster download speeds, better call quality, etc.
PDA represent your build version. Your current build is Build: IML74KXWLP7, then PDA version of your ROM is XWPL7. Again XW represend for countries, XW means it is for France, Germany, Italy, Netherlands, Portugal, Spain, Turkey, United Kingdom.
If suppose your build info contain DDLPA, then DD represens for India and PDA version is LPA, means that ROM is for India
Same way CSC is sales code., you can check your ROM CSC by dialling *#1234#. Again first two digits represents country and last three represents release time. But as such there is no restriction to use any ROM for any country if your device is unlocked(carrier restriction free).
For other informations search the forum.