[How To] Easily Root your SGS2

[jivy26]

J/W can we OC it with Setcpu? i havnt done it yet, not stupid just curious. just Rooted it. everythings fine cept the quadrant issue lol.. regardless..

Quadrant really means nothing. If your phone runs smooth and is not laggy that is what you should be more concerned with. Rest is just for the birds.

 

[Colton127]

J/W can we OC it with Setcpu? i havnt done it yet, not stupid just curious. just Rooted it. everythings fine cept the quadrant issue lol.. regardless..

I don't know why you'd want to over clock this device except for getting very high benchmark scores.

I'm running my phone on 200mhz-500mhz and are getting no lag, freezes, etc. Only some jitters when scrolling on very large web pages. I'm amazed at the speed of this processor, it's brilliant.

At 500mhz clocked, the browser is on-par with the speed of my iPhone 4. That's sad.


WARNING: DO NOT CLOCK YOUR CPU AT 200MHZ AND LOCK YOUR SCREEN - It won't unlock!
-In the event that you do this, just hold down the lock button for 20 seconds and force a reboot. Ensure that you don't have the CPU clock starting on boot!

 

[DoctorQMM]

codeworkx's kernel includes CWM 5.0.2.3 - a custom kernel is, in my opinion, the ONLY proper way to have CWM.

The orders are slightly wrong - the CWM kernel needs to be prior to SuperOneClick. Also there's a CWM-flashable su package floating around somewhere that can be used in place of SOC. Also, my custom kernel has an automatic root injection script - flash it, boot, and you're rooted, even if you flash another kernel later.

Entropy512: thanks so much for the quick response and additional detail. Yes, I did not list these in sequential process order... was just trying to show that the 1st method (link) didn't seem to involve flashing a new kernel, while the OP post (jivy26) did... and to understand how the 1st would work without changing the kernel.

 

[jbg22003]

I don't know why you'd want to over clock this device except for getting very high benchmark scores.

I'm running my phone on 200mhz-500mhz and are getting no lag, freezes, etc. Only some jitters when scrolling on very large web pages. I'm amazed at the speed of this processor, it's brilliant.

At 500mhz clocked, the browser is on-par with the speed of my iPhone 4. That's sad.


WARNING: DO NOT CLOCK YOUR CPU AT 200MHZ AND LOCK YOUR SCREEN - It won't unlock!
-In the event that you do this, just hold down the lock button for 20 seconds and force a reboot. Ensure that you don't have the CPU clock starting on boot!

i play with alot of Emulators so more cpu the better,

so j.w where would i goto get the old kernal back? seems some videos on Justin.tv are chugging when they didnt before. (i didnt back anything up)

 

[thesilentnight]

Rooting Help

Ok this is my 6th attempt at rooting.....thanks everyone for the help previously....I am at the Odin stage..where I have my GS2 plugged into the computer...Odin is at the Setup Connection Step (Step 6)...and its hanging..........I unplugged the USB...and replugged it...as advised in the steps to rooting....and nothing is happening....please advise......thanks in advance...

 

[lakid06]

help!!! i was trying to use odin to root and it said successful but it is stuck at the boot screen with a yellow triangle. what can i do to fix???

 

[marv_in_lbc]

Awesome, much thanks

jivy26, I registered for the sole purpose to tell you "Thank You." I have had my SGSII for about a-week-and-a-half now and just rooted it today.

Very precise instructions--I had no issues at all.
I didn't even get the hang the requires the unplug, un-check, re-check, re-plug!

 

[bella92108]

So I just tried to reboot to recovery, and got an "!" and then went to blue CWM, but then when I try to restart phone it's just putting me into blue recovery, and I can't seem to access any of the settings, and when I click anything I just get the hat icon. What's going on?

 

[Pirateghost]

So I just tried to reboot to recovery, and got an "!" and then went to blue CWM, but then when I try to restart phone it's just putting me into blue recovery, and I can't seem to access any of the settings, and when I click anything I just get the hat icon. What's going on?

home button, not power button

 

[bella92108]

home button, not power button

THANK YOU THANK YOU THANK YOU. I was totally freaked I borked my phone and was going to have to start over. HUUUUUGE THANKS!

 

[jbg22003]

well on the basis i use cpu intensive emu's

does anyone know if Tegrak Overclock works with this kernel if not setcpu.


--from tegrak--
What is this?
This is for family of Galaxy S and Galaxy S II devices.
You can set maximum CPU frequency of your device on available models EASILY.
This works with STOCK kernel, STOCK rom, (x)custom kernels and roms(x).
OOPS, after Gingerbread, not available on custom kernel that modified kernel source codes(added function symbols..etc). Froyo is still possible on almost customs.
You just need to rooting.

 

[Dranakin]

Hmm not sure, here is a set of a little more detailed instruction, compare these to what you did. Maybe you missed something. Hope it helps.

------------------------------------------------------------
THIS WORKED ON MY AT&T SGS2, I ASSUME NO RESPONSIBILITY IF IT BRICKS YOUR PHONE!!!!

Preparation
- Download ODIN installer, install.
- Download kernel, Don't extract this file
- Download and extract SuperOneClick
- Download Samsung’s KIES 2.0. installer, install. This will install the correct USB drivers, this insures programs can communicate with the device. Make sure to reboot computer
after installation.

Process
1: Make sure that your device has USB debugging mode set, on your device go to: Settings -> Applications -> Development -> USB debugging.
2: Reboot your device into download mode.
To do so: Turn the device off, then power it on again by pressing and holding down "Volume Down" & "Volume Up" & "Power" simultaneously.
3: Launch ODIN.
4: Connect the device to your computer using USB.
5: Wait a few seconds, the ODIN screen will show that a device is now connected
- Make sure that in ODIN nothing is checked, except for "Auto reboot" and "F. Reset Time" checkboxes.
- Press the "PDA" button, search and select the "Kernel" file.
- Press "Start". ODIN will now flash the kernel, and the device should reboot.
-If it gets stuck, unplug and replug your USB
6: Wait until the device is rebooted
- While still being connected over USB, start SuperOneClick
- And press ROOT.
7: Reboot the device.
8: You should now have a rooted SG2

This worked perfect for me. I had trouble getting ODIN to recognize the phone because I realized that I hadn't yet installed Samsung’s KIES for the drivers. Thanks!

 

[highaltitude]

This thread was great, followed it exactly and rooted my phone. I have read have of the thread so far, but has anyone yet found how to get rid of the yellow ! yet?

 

[Pirateghost]

This thread was great, followed it exactly and rooted my phone. I have read have of the thread so far, but has anyone yet found how to get rid of the yellow ! yet?

There is a sticky next to this one that answers common questions just like this. It's in the first post in that thread

Sent from my SAMSUNG-SGH-I777

 

[sgthuan]

Hi there,
I don't think this method works with the new firmware I777UCKJ1 or new baseband right? I actually used this method to root my S2 and all of sudden I lost the wifi. Are there any solutions?

 

[shind12kl]

problem with ODIN

Hi, I'm new to this rooting the device and whenever I launch the ODIN v. 1.82 and connect device and load the tar and start it always force close.

Please help me what to do. I'm using window 7 32 bit labtop.

 

[Entropy512]

Hi there,
I don't think this method works with the new firmware I777UCKJ1 or new baseband right? I actually used this method to root my S2 and all of sudden I lost the wifi. Are there any solutions?

It'll work, but you need to flash the J1 stock kernel back again if you want wifi.

Same deal as with UCKI3/I4/J1 leaks on the Infuse - the leaks require something in the kernel for wifi support not present in Samsung's source code drop.

 

[verncat05]

First time android phone user here (goodbye iOS!) and rooted my phone without issue, thanks for the info here! I also just wiped it clean and installed UnNamed 1.0.3 on it without issue as well. I know I am able to return it to stock, but not sure how to exactly (just in case I need to...).

 

[Recalesce]

I know I am able to return it to stock, but not sure how to exactly (just in case I need to...).

Download Odin without pit (link in this thread) :
http://forum.xda-developers.com/showthread.php?t=1301682

and download the Stock ROM rooted or not (you probably don't need the modem) :
http://forum.xda-developers.com/showthread.php?t=1286432

1. Turn your phone off and put it in download mode (hold down volume keys and plug the phone into USB). Hit the up volume when prompted.

2. Open up the Odin, click the PDA button and find your ROM.tar file and hit Start. It'll install and reboot auto-magically.

3. Boot into e3 Recovery by turning your phone off, holding the power and volume buttons, when you see the screen turn on release the power button and continue holding the volume buttons. Choose the necessary option and reboot.

 

[Rolex81]

First time android phone user here (goodbye iOS!) and rooted my phone without issue, thanks for the info here! I also just wiped it clean and installed UnNamed 1.0.3 on it without issue as well. I know I am able to return it to stock, but not sure how to exactly (just in case I need to...).

http://forum.xda-developers.com/showthread.php?t=1286432


Entropy has a thread explaining this. Search is also your best friend on this forum.

Sent from my SGH-I777 using xda premium