Rooting Galaxy S2 - Dummies Guide


  1. ares05

    ares05 Member

    One more question :p Before I root is it sufficient that I clear my USB storage (internal) and factory reset my phone?? Or is there anything more that I should do?

    Thanks!
  2. ironass

    ironass Well-Known Member

    You don't need to do that when rooting your phone! See posts #1 and #2.
  3. ares05

    ares05 Member

  4. ironass

    ironass Well-Known Member

    My advice, for what it's worth... Take it nice and slowly. Read everything. Double check everything. Don't panic. :afraid:

    We've not lost a man yet...











    of course, there's always a first time! :laugh:
  5. wolflet27

    wolflet27 Active Member

    Hi guys, root newbie here.

    8 months after owning the s2, finally decided to take the plunge and root my device. Been reading all thr guides but can't figure out which cf-root to use. Can anyone hrlp advise?

    My device is running ics 4.0.3 dxlpb firmware. Thanks in advance
  6. ares05

    ares05 Member

    Guess who just hopped onto the rooted S2 bandwagon :D A very emotional experience last night, my boy finally became a man :p

    ironass, walker..thank you guys for the most elaborate and structured rooting process. Gonna flash in Siyah 3.3.2 and a decent ROM tonight. Might have a few
    queries to bug you guys with :p

    Thanks again!
  7. ironass

    ironass Well-Known Member

    Hello and welcome to Android Forums wolflet27! :)

    Unfortunately, knowing that you are on DXLPB firmware does not help with the choice of CF-Root kernel.

    Please see under, "The Root Kernel", in post #1 which describes precisely how to ascertain the root kernel needed for your phone.
  8. ironass

    ironass Well-Known Member

    Congratulations ares05! :congrats:

    I trust that you have made Titanium Backup and nandroid backup as well as backing up your effs folder, as per post#2. These are your, "Get out of jail cards", that we modders rely on.
  9. wolflet27

    wolflet27 Active Member

    Ok. Figured out to use lpb cf root according to kernel i9100dxlpb. After going thru odin tho, the phone won't boot pass yellow triangle. Had to unroot thru stock firmware to get it back on. Help please?
  10. ironass

    ironass Well-Known Member

    Which CF-Root kernel did you use to root your phone?

    Have you a link to it?
  11. wolflet27

    wolflet27 Active Member

  12. Lenard The Pig

    Lenard The Pig Active Member

    Great Guide. Would like to just clarify before I take the big step. Ive got 3.0.15-i9100xwLP7-CL340913 DPI@DELL134#3 on my handset. Im thinking i need CF-Root-SGS2_XW_XEN_LP7-v5.4-CWM5.zip as it has LP7 and XW in the name. Is this correct of is there something more relevant. Ps, which virus apps actually work on Android as i hears theres a new Android botnet..
  13. ironass

    ironass Well-Known Member

    Hello and welcome to Android Forums, (The Asylum), Lenard The Pig! :D

    Your choice of kernel is spot on.

    As for an Android antivirus software, personally, I don't use one as I believe that the best way of protecting yourself is by not being stupid. By that I mean that if you follow the guidelines laid down in this post you are pretty much covered.

    Even the best Android antivirus software is no guarantee I'm afraid and could lull you into a false sense of security. Besides, being rooted means that you can have nandroid and Titanium backups that you can revert to easily, see post #2.

    Having said that, I know that some of my colleagues on here use an antivirus software and three spring to mind...

    Avast Mobile Security free.

    AVG Antivirus free. The Pro version is
  14. ares05

    ares05 Member

    Yup that's the right kernel you've got there. I used the same one yesterday to root my S2.
  15. ares05

    ares05 Member

    Ironass, I've got one of those noob queries I told you about earlier :p

    The more I read, and I've been reading a whole lot, the more questions that pop into my head.

    Can we use any ICS ROM with the ICS Siyah 3.3.2 kernel or are there any compatibility issues between ROMs and kernels?

    Pardon the ignorance :p

    Thanks!
  16. ironass

    ironass Well-Known Member

    This is where the confusion begins...

    That kernel is the XX OXX LPB for the Eastern European firmware that was released back in April, I think.

    Your DXLPB firmware, for Singapore, Malaysia, Thailand and Vietnam, which came out last week is not compatible with that CF-Root kernel I'm afraid.

    I have just done a quick Google and cannot find a CF-Root kernel for DXLPB as yet.

    The nearest that I can come up with is the DXLP9 CF-Root kernel which may work as it is close.

    Since you have already got your stock DXLPB firmware which you have, correctly, flashed already, to get you out of trouble... you could try that kernel and see if you can get root with it.

    If not, you will have to sit tight until there is a CF-Root kernel for the DXLPB or you could try this method, here.
  17. wolflet27

    wolflet27 Active Member

    wow. thanks for the help!

    i managed to achieve root with the kernel u suggested!

    finally have a rooted device
  18. Lenard The Pig

    Lenard The Pig Active Member

    OK so im in Odin 3.4 and connect in download mode but the COM box isnt yellow do i need to install newer drivers fr the Galaxy s2 ? I have Kies 2.3 The S2 in Device manager is connected as SAMSUNG Mobile USB Modem #2 Driver Date: 11/05/2012 Driver Version: 2.9.319.511 Digital Signer: Microsoft Windows Hardware Compatibility Publisher
  19. ironass

    ironass Well-Known Member

    Have you ensured that you could connect OK to Kies as per post #1?
  20. Lenard The Pig

    Lenard The Pig Active Member

    Yup, tried Kies, backed up contacts successfully. Tryed install Driver located in Kies folder on comp. Check USB Debugging is enabled. Tryed a couple of Rear USB ports ( COM 4 / 6 )
  21. ironass

    ironass Well-Known Member

    Have you enabled USB debugging as per post #2?

    EDIT Just noticed you checked USB debugging.

    So, you have your phone in DOWNLOAD MODE when you connect it to Odin via USB?

    You have also ensured that Kies is NOT running in the background?
  22. Lenard The Pig

    Lenard The Pig Active Member

    I uninstalled Kies, restarted. Then i went ahead and clicked start. It appeared to work, i used Root Checker free and it said im rooted. Any other way to check / any reason the box didnt turn yellow or any problems doing it while its not yellow.
  23. ironass

    ironass Well-Known Member

    Are CWM and SU (Superuser) installed in the App Drawer?
  24. Lenard The Pig

    Lenard The Pig Active Member

    Yes, ( Didn't realise :) ) and Super updated. Odin NAND Write Start!! RQT_CLOSE !! RES OK !! Completed.. Added!! All threads completed. (succeed 1 / failed 0) Removed!! Added!! Removed!!
  25. ironass

    ironass Well-Known Member

    Congratulations Lenard The Pig... you are rooted! :congrats:

    Now it's time to crack on with nandroid, Titanium and effs backups as per post #2. :)
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