Download Rom Oficial Samsung Galaxy S2 Jelly Bean

• Download Rom Oficial Samsung Galaxy S2 Jelly Beans

You’ve landed on the right page if you live in Sweden and you want your Galaxy S2 I9210 from LTE updated to Android 4.1.2 Jelly Bean XXUAMF1 official firmware. If your country of residence isn’t Sweden, you can still follow our guide since we will tell you how to manually update this handset.

How to Install Samsung Galaxy S2 I9100 Official Stock ROM Android 4.1.2 Flash Update Restore I9100 I9100P I9100G I9100T I9100M Recovery-Mode Download-Mode Root S2 s2 SII Download Odin 3.07 http.

This tutorial will not ask you to root your phone. But, if your Galaxy S2 I9210 is rooted, the update will be responsible for it losing root access. Which will require another rooting procedure after you complete this tutorial.

Requirements

Download Rom Oficial Samsung Galaxy S2 Jelly Beans

Besides not requiring root access, your smartphone does need to keep up with certain pre-requisites. Please find them detailed below:

• turn off those programs that assures your device protection against all sorts of virus threats and whatnot;
• do the same for your laptop;
• use a laptop or a PC whose main OS is Windows;
• create a backup via this guide;
• create a NANDroid backup using this tutorial;
• charge your handset’s battery so that it’s not fully empty;
• while you’re at it, turn on USB debugging;
• be on the lookout for USB drivers made for your smartphone and install them on your notebook or comp.

That concludes what you have to do before the actual update steps. The latter should be easy to follow if you stick to them throughout our guide.

How to flash XXUAMF1

1. Your first and most important task is to download Odin tool on the notebook (from this location) and then also download this file: (file name: I9210XXUAMF1_I9210COVUAMF1_COV.zip)
2. The files introduced just now should be extracted on the same laptop (or PC) and, when their content is there, you have to launch the Odin and power the Galaxy S2 GT-I9210 off. These actions are needed because you will then have to enter your handset into Download Mode by pressing and holding at the same time these keys: Power + Volume Down + Home.
3. After you are ushered into the Download Mode, read the above:
   – grab hold of your phone’s USB cable;
   – use it as a way to plug your device to the laptop.
4. Make sure the Odin is still doing its thing and wait for the plugging to be over. Odin shall give the green light by displaying an “Added!!” message and an ID:COM box in either blue or yellow.
5. Don’t fret if the devices fail to show those signs; you can at any time try a different USB port or make sure to flash the USB drivers a second time.
6. Select the Android 4.1.2 JB XXUAMF1 file after you’ve opted for PDA while in Odin. Now wait until you see some check boxes; deactivate F. Reset Time and Re-partition if they’ve been selected before. Tap “START” and wait for the update firmware to be installed on your handset in the next couple of minutes.
7. You need to reboot the Galaxy S2 I9210 LTE only after you see PASS in green. That is all you had to perform in order to see the Jelly Bean 4.1.2 XXUAMF1 official firmware on your Galaxy S2 GT-I9210.

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NOTE: On the other hand, your phone can be the victim of various problems. As in: it can be stuck in a boot loop. To untangle it from that, you should do this:

• reboot the device in Recovery Mode;
• choose Factory Reset/Wipe Data;
• select Wipe Cache Partition.

A second type of issue can disturb your peace: the handset remains stuck during the tutorial. The actions needed to make the problem disappear are discussed below:

• unplug the phone from the comp;
• go to Odin tool;
• make sure you close it;
• flash the USB drivers again;
• restart your Samsung I9210 by force;
• redo our guide.

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The way to root your Galaxy S2 I9100 has a lot to do with certain rules. And they are all detailed in this post that deals with how to root your phone that should run Android 4.1.2 ZSMSA Jelly Bean Stock ROM.

But why would you actually root the phone? Well, first off: you will be able to install custom ROMs, root-only apps, new features and tweaks and many other stuff.

Requirements

For rooting purposes, we recommend you to consult the following requirements beforehand:

• turn off the antivirus programs that work on your handset and your laptop;
• turn on USB Debugging;
• get USB drivers for your smartphone model on your laptop;
• charge the battery of the phone;
• turn off Samsung KIES;
• make a backup via this tutorial.

Here is what you have to do to root your Galaxy S2 I9100.

Instructions

1. The first stop to accomplish: download the (file name: speedmod-kernel-s2-jb-k5-3-Odin.tar) and Odin tool v3.07 from this place on your notebook. Out of these two, only the latter must be unzipped.
2. Now switch the phone off and enter it in Download Mode by performing the next actions: press and simultaneously hold Volume Down + Home + Power, let go of them once a screen of warning pops up and when it does make sure to press Volume Up.
3. Open the Odin tool v3.07.exe on the laptop and plug your phone to it. When you see “Added!!” appear, the connection will prove successful. In a different scenario, you should remedy the situation by installing the USB drivers again or by using a different USB port. That way, you will be sure of the success of the connection.
4. Then go to Odin’s window. Now tap “PDA“. After you open the rooting file, you need to disable Re-partition and then tap “START” to begin the rooting process. The latter is going to have a happy ending once you see the phone rebooting into the rooting package.
5. To check if the phone is rooted, use Root Checker; this is an app that can be downloaded from Google Play.

IMPORTANT NOTICE: When the handset is stuck in boot animation, you should apply something called a factory reset; the same must be applied in case there’s a boot loop. After you do that, your Galaxy S2 GT-I9100 is going to boot into Normal Mode.

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If Odin remains stuck altogether, do this: unplug the phone from your laptop, close the Odin, take out the battery, put it back in, start the Odin again, enter the phone in the Download Mode and from there on redo the steps which tell you what to do after this mode has been entered.

Should you wish to get TWRP or CWM, you will have to make use of one of these: Goo Manager or ROM Manager. Each of these is available in the usual Google Play. After you download the second one on your handset, you have to open it and then install the custom recovery of your liking by using an installation key. If you wish to go for the Goo Manager app instead, then open it after you’ve downloaded it on the phone, tap Menu and then opt for “Install OpenRecoveryScript“.

And that is all. Enjoy a rooted Galaxy S2 I9100 by exploring all the possibilities which come with it!

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