Root and install Kitkat on Samsung Galaxy s2 i9100 – without a computer

Root sgs2 and Install Kitkat Rom without even touching the computer.

 

If you own a Samsung Galaxy S2 GT-I9100 and haven’t already rooted it. First of all, wow, you really are patient. But by now, you have probably guessed that Samsung has deserted you and won’t bring any more updates to your phone. I like my phone a lot and the hardware still competes with new phones so there’s no reason to buy a new phone yet! Bring out the enviromentalist in you and keep your electronics a little longer!

1. Root
2. Download all files to your phone
3. Install Recovery
4. Factory erase phone
5. Install your flavor of Kitkat Rom.
1. Root – Framaroot
You’re going to need the “one click root” app framaroot. Scroll down and download the latest version or better yet, install framaroot from Google Play store. Just make sure your device is on the list of compatible devices.

It’s now ridiculously easy thanks to framaroot. Open framaroot on your phone and choose that you want to root your phone and  Install SuperSU as the action after root. There are at the time of writing, three modes available. Try them until you find one that works. For me Aragorn worked every time. If it doesn’t work, you won’t be able to continue with the next steps. Try my old manual on how to root sgs2. It should still be relatively accurate.

Alright, let’s say you’re Rooted, reboot your phone and go on to the next step.

2. Download all files to your phone

Install Rom Manager from Google play
Rom manager

Download CWM Recovery (Kitkat Compatible)
CWM-Recovery-Kitkat-Compatible-i9100

Download your flavor of Kitkat Rom and Gapps.
I have tried a multitude of different roms out there and as of now my favorite is Resurrection Remix. 3 main reasons. It’s stable, Gps works well MMS works well.
If you want this rom, head over here Resurrection Remix – XDA. Scroll down to the download section and download the latest versions available. Make sure you have both the Rom and Gapps (I use the light version of gapps. You can install the other apps from Play if there’s something your missing anyway)

3. Install Recovery
First you need to install just a normal recovery. I usually do it through Rom Manager.
open rom manager which you have already installed. And click Flash ClockworkMod Recovery. If it doesn’t choose phone version for you, choose galaxys2. I never choose i9100. I’m not sure why there are two versions but galaxys2 always works for me.

When you are done, turn your phone of. Start it up by simultaneously holding the vol-up, menu and power button. You should see a cute android spinning with things in his stomach and then you should find yourself in recovery mode.

Navigate with vol-up and vol-down and select with the power button. Choose Install zip.
> Choose zip from /storage/sdcard0 (or whatever option you have where you can find  your downloads)
Select your CWM-Kitkat-Compatible-i9100.zip and choose Yes. After you’re done. Turn your phone of and start it into recovery mode again like you did earlier.

4. Factory reset
Select wipe data/factory reset. Make sure you have all your files you don’t want to loose, backed up. This WILL erase most files on your phone if not all.

5. Install Kitkat Rom
Now you’re ready to install your rom. Select Install zip and choose your “rom.zip” file first. and chose Yes. After you have done this, install the Gapps file you downloaded as well.

Now reboot your phone and you should be done!

Downloads in case you’re confused.
1.  framaroot from Google Play store
2. Rom manager
3. CWM-Recovery-Kitkat-Compatible-i9100
4.  Resurrection Remix – XDA and Gapps.

IMPORTANT – Only if you get a signature verification issue
If you get issues with signature verification regarding CWM recovery. Please make sure you check the MD5 Sum of the file so that it hasn’t been corrupted during download. Here’s how to do it.

Download MD5 Sum Checker >here<
And compare to this MD5.
MD5:
e755faea3d638105b29f39ebaa5abaed

If you want to check the MD5 sum on your computer it fairly simple. For windows there are applications that will do it for you. In Linux or on a Mac you just open a terminal, go to where you have your file and type

md5 CWM-KitKatCompatible-i9100.zip

press enter and the md5 sum will be displayed.

disclaimer: I’m not responsible for anything ever.

Install the latest Stock ROM SGS2

Hur gör jag för att uppdatera min Samsung Sgs2 till senaste versionen?

If you want to update your phone to the latest Stock ROM you have a couple of options. The easiest way is to see if you can update it with the OTA app (over the air) that is included on your phone. Check->Menu->Settings->About Phone->Software Upgrade. If it doesn’t work you can try Samsung KIES from Samsung (which most likely will not work atleast never for me). If none of those options work or if you want to update your ROM to the latest Unbranded Rom, you may follow this guide. As usual, I don’t take responsibility if you break anything. Also keep in mind that you might loose your guarantee.

sammobile.com is a good place to find the latest Samsung ROM Leaks for various Samsung Phones. If you want to download the latest version for your phone you will most likely find it there. Go to Firmware -> Firmwares -> Type:Smartphone ->OS:Android-> Model:i9100 Choose your region. To download you will have to register for free.

Why Upgrade?
It’s fun to have the latest ROM and a lot of other reasons like it’s better and stuff.. and because you can.

The steps
Download Odin 3 v1.85  (simple google search and you should be able to find it or a later version) and then download the ROM from sammobile as explained above and extract the files from the archive.

Power off your phone and then power it on again by holding the following 3 buttons simultaneously.

Volume-Down + Home (middle button) + Powerbutton. If you did it right you should find your self on a screen with the title ODIN MODE and the option of restarting or continue. Press Volume-Up to continue.

Now connect the USB-Cable to your phone. Windows should now try to install the drivers for you phone, just let it finnish. If the driver install fails you should check Samsungs support pages for the drivers to your phone. If it works, Odin should look like this:

Now add the appropriate files to flash as following:

PDA = point to the file with “CODE” in the name
PHONE = “MODEM”
CSC = “CSC”

Make sure only Auto Reboot and optionally. F.Reset Time are checked

Click Start and wait until you see a green PASS on the screen, your phone should now reboot and you’re good to go!

 

Explanation of common terms

This is an attempt to explain different terms used by the community. I’m going to keep the explanations short and I hope I’m right.

This is an attempt to explain different terms used by the community. I’m going to keep the explanations short and I hope I’m right. If I’m wrong, please tell me so I can correct it. Am I missing something? Tell me and I’ll try to add it to the list.

Bootloader
The bootloader is what tells your phone what to do when you power it on. If you would like to install to different ROMS on you phone, you would have to tell the bootloader which one to start. If you’ve played with multiple OS’es on you computer you might be familiar with Grub, or Refit?

CSC
Country Specific Code – This is just what it sounds like, it’s the location settings of your phone. Let’s say you buy a phone in Sweden with the CSC specific code “NEE” (Nordic countries) and later flash a custom rom with the CSC specifics of Russia “RUS”, you will have some explaining to do if you turn you phone in for service..

Firmware
The firmware is the program/code that provides the phone with the control to run all it’s functions. Without the firmware your phone will not run.

Kernel
The kernel is the core of the firmware that makes your phone run. Using different kernels can make your phone behave very differently. You may have a kernel that makes your phone fly but instead drains the battery or maybe a kernel that makes the battery life very long but the phone slow. If your lucky the phone will be both fasst and have good battery life. If you phone freezes a lot it might be a faulty kernel.

Odexed/Deodexed
There are many high tech explanations of this but I’ll keep it simple, please correct me if i make a fool of myself.

DeOdexed – slower
Slower loading times the first time you start the apps after changes are made on your phone. It will fill the Dalvik Cache with Dalvik Executable (.dex) files. So every time you clear Dalvik cache, the loading time of each app will be slower. But the apps will be more more customizable for theming and such.

Odexed – faster
The phone will slightly faster, won’t fill Dalvik cache but it will be less customizable. A normal user will probably not notice the “customizable” difference but maybe the speed.

Odin
Is an application developed by Samsung to control, flash, install stuff on Samsung phones. It only works in Windows but there are other alternatives for Linux, Mac and even for your phone like Heimdahl and Mobile Odin.

PDA
If you flash the PDA in Odin, it will at the least include the kernel but often it can include the entire ROM. Make sure you know what you downloaded..

PIT
You might run across a file with the file ending .pit. Be careful it includes the Partition Information Table and will repartition your phones internal storage and format the phone. You will loose anything you have not saved.

Radio, Modem, Phone
Different names used for the same thing. Its what makes you able to use the cellular and other networks. If you have bad reception you can try another Radio and it might get better.

ROM
A rom is usually just like above although it doesn’t necessarily have to include the kernel or the modem. Usually the ROM is what makes your phone look and feel the way it does, including themes, ringtones, settings and standard apps.

Stock ROM
Is the firmware that came with your phone or at least a firmware signed by the manufactorer of your phone. The stock ROM will include everything needed to use your phone.

Zipalign
Zipaligned applications (apk:s) are optimized with an alignement tool to be less memory consuming (and faster).