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Solve Boot Loop Problem In Samsung Galaxy S2

October 23, 2011

Recently I have switched from Symbian to Android, so everything in Android is new for me in my Samsung Galaxy S2. After using it for couple of days, I rooted my device so as to install many dev tools. But after browsing in many active Android forums I found that almost everyone is using custom ROMS in their Android phones. So I too thought to give it a try. Lucikly a latest and stable version of CM 7.1 that was released on 10th October and was waiting to flash my Galaxy S2.

So I prepared my phone for flashing and successfully flashed with CM 7.1 in one go. I used that ROM for a single night and found that it was unstable with loads of bugs. So I wanted to flash back to Galaxy S2 Stock Rom the early next morning. I downloaded the correct version of Stock Rom from XDA Forum and flashed it according to the given instruction. The flash process went smoothly but after the process completed and the phone got rebooted, I found that my phone has gone into a boot loop. I removed the battery and started it again but still the same problem persisted. Then I searched over the net but did not find the solution. Now I was almost blank as I did not have good knowledge about Androids. After a few tries I managed to get my phone back, so I am listing the steps below about how i solved the loop boot problem.

  • Disconnect your phone from PC.
  • Switch off your phone.
  • Now press and hold volume UP key + Home + Power button for few seconds untill you see a screen with some options, this is called Recovery Mode.
  • Now use the volume key for navigation and home key for OK.
  • Select wipe data/factory reset.
  • Then select Yes — delete all user data.
  • The phone will get restarted and perform some functions, do not press any key.
  • After every process is completed your phone will restart again and voila your have recovered from the boot loop.

samsung galaxy s2 recovery mode

Hope this small tut have helped many newbies like me to recover their phone from the boot loop problem after flashing or updating their Samsung Galaxy S2.

Ashish Soutiyal+ is the Founder and Administrator of Tech Blog. He love to explore the tech world. He is a part time dedicated blogger, coder and designer of Xinz.
Ashish Soutiyal

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{ 21 comments… read them below or add one }

1 Adie December 2, 2011 at 2:21 am

Hey man….thnx a lot….it worked for me….

Reply

2 rahul December 10, 2011 at 4:28 pm

I have samsung galaxy s2 with current firmware version: PDA:KF4 / Phone:KF2 / CSC:KF1(H3G).
I tried to update XWKK5 from androidadvices.com, and got the boot loop. My phone stuck on Samsung Galaxy SII logo.

I tried to flash stock firmware with odin 1.85. Firmware i used is GT-I9100_H3G_I9100XWKF4_I9100NEKF2_I9100H3GKF1.tar

I can not enter recovery mode by vol up + menu + power. I can only enter Download mode, and odin can flash any firmware successfully. But none of the firmware solved boot loop. I also tried to flash Villianrom1.1 with odin, but no success.

Can you please help me?

Thanks in Advance.

Reply

3 Ashish Soutiyal December 10, 2011 at 6:40 pm

Hello, you need to flash with the stock ROM. Try a clean flash with stock ROM, and don’t forget to wipe data via Recovery Mode. If your phone still don’t boot up, you can reply here again.
Regards

Reply

4 rahul December 14, 2011 at 7:08 pm

I can not enter into recovery mode. I tried to flash stock rom. but still problem persist.

For my original firmware ” PDA:KF4 / Phone:KF2 / CSC:KF1(H3G)”
is GT-I9100_H3G_I9100XWKF4_I9100NEKF2_I9100H3GKF1.tar right file? can you please suggest link to stock firmware for me.

Thanks

Reply

5 Ashish Soutiyal December 26, 2011 at 7:34 am

Download Sansung Galaxy S2 Stock firmwares from here http://forum.xda-developers.com/showthread.php?t=1075278

Reply

6 Kush April 3, 2012 at 11:00 pm

Hey Mate,

How did you end up solving this problem? I ended up with the same problem as you. I am now going to flash my Stock ROM back, but not sure if that is going to solve my problem.

Hope it does… :(

Reply

7 Hanks December 26, 2011 at 5:29 am

Just FYI you’ve saved me from a heart attack this night. Tried installing the CM9 Alpha through ODIN, shit went wrong and then the bootloop struck. So yeah.

Thanks!

Reply

8 jojo January 13, 2012 at 7:47 am

Gud day sir, i flash my galaxy s2 to stock rom because it bootloop. after doing those steps in rebooting, it is still stock in samasung galaxy logo. i already do the 1. flash stock rom
2. wipe data/factory reset
3. wipe cache
4. reboot
but after it reboot, still stock in samsung galaxy 2 logo. pls. tell me what to do.

Reply

9 Vinícius January 20, 2012 at 11:31 pm

Thanks so much! It worked for me!!!!!!!

Reply

10 Seb February 8, 2012 at 7:37 pm

Thx man working perfectly :)

Reply

11 guest February 23, 2012 at 8:21 am

hello, can you help me? my samsung galaxy sII has problem with the camera. the camera is hanging. when i want to take pictures, the sign ” warning! the camera is failed !” appeared. so i couldn’t take the pictures. so please reply me ASAP. i’m a new user.

Reply

12 Axcer March 20, 2012 at 1:55 am

Thanks a lot man! I almost freaked out! It worked! BTW what does “wipe cache partition” in recovery mode do?

Reply

13 Ashish Soutiyal March 20, 2012 at 1:27 pm

You are welcome buddy, hope this helped many Samsung Galaxy S2 users…

Reply

14 Hiro March 27, 2012 at 1:56 am

will I lose all my data?
I have some photos that I don’t want to loose

Reply

15 Ashish Soutiyal March 27, 2012 at 6:11 am

No, wiping the cache will not delete your data…

Reply

16 Erdinc May 9, 2012 at 10:24 am

Hi Ashish, i have also some photos and contacts I dont want to be deleted. But you had said “wipe data/factory reset” above. Won’t it delete my photos?
Thanks.

Reply

17 Ashish Soutiyal May 9, 2012 at 10:54 am

Might b it can, i really did not noticed that.. to be on safe side move all your data to external memory card, as “wipe data / factory reset” won’t affect your external card. As I remember, it even won’t wipe out your data in phone memory, but to be on safe side you can take the backup..

Reply

18 Erdinc May 9, 2012 at 10:49 pm

My phone’s got locked in a boot-loop (and I didnt do anything, Im just an ordinary user). So sadly, there is no backup chance :(
Thanks for your answer though.

Reply

19 rt May 10, 2012 at 4:38 pm

I found when flashing SGS2 first time, that first boot took considerable longer than expected. Please do let device have at least 10 minutes…

Reply

20 Ashish Soutiyal May 10, 2012 at 6:28 pm

10 mins are too much.. i have flashed my Galaxy S2 almost 60-70 times, the maximum time it may take is around 5-6 mins for the first boot up…

Reply

21 Ozias May 20, 2012 at 7:33 am

Thanks a lot it worked for me!

Reply

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