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Rooting Galaxy S2 - Dummies Guide

Discussion in 'Android Devices' started by ironass, Jan 13, 2012.

  1. Anas Ahmed

    Anas Ahmed New Member
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    Ok thank you !
     

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  2. Dieter Kible

    Dieter Kible New Member
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    Hi all,
    when searching for hints how to root my old Samsung Galaxy S2 I9100G (I9100GGSMH Kernel Version 3.0.31-893450) I found your tutorial and it sounded easy enough that I could do it. I successfully followed the instructions in post #2 up to #2.4. Step 4 but then the success-story had an abrupt end: the S2 did not boot any more after showinf a green 'PASS' in odin. It stucks in the splash screen 'Samsung Galaxy S II..' and whenever I press the power button it just starts over and hangs in the same screen again until I remove the battery.
    I tried to go into the 'recovery mode (as recommended in #2.5) but this does not work any more. Fortunately the 'download mode' still works, however, it does not boot from there either. Whad did I do wrong?
    I wonder what can be done now to recover the device?

    I flashed the kernel: Siyah-s2-v6.0b5.tar (had JB 4.1.2)

    Many thanks for any tip
    Dieter
     
  3. ironass

    ironass Well-Known Member
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    Hello and welcome to Android Forums Dieter Kible

    As per post #1...

    "This guide is for rooting the Samsung Galaxy S2, GT-i9100, GT-i9100M, GT-i9100T & GT-i9100P only and no other variant.***


    If you are unsure of the model of your phone, go to Settings > About phone > Model number

    (*** The Dummies Guide can also be used to root the, "GT-i9100G", on Gingerbread, (only), providing you use the root kernels mentioned in post #2, here)"

    I would suggest downloading and flashing the stock firmware for your, "G", variant to get you up and running again.
     
  4. Dieter Kible

    Dieter Kible New Member
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    Many thanks ironass,
    I actually read this comment carfully but came to the conclusion that it would apply to the newer JB as well - clearly my fault!
    Now I guess I'm in trouble and have to figure out how to flash an appropriate stock firmware.
    Is there another forum on androidforums dealing with my sort of problems?
    So far I only found a stock ROM 'I9100GXXLSR-DBT.zip' on 'http://www.handy-faq.de/forum/galaxy-s2-original-roms-kies-f357/' but it does not completely match my smartphone model. Do you think this would work?

    Thanks a lot
    Dieter
     
  5. ironass

    ironass Well-Known Member
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    Sorry Dieter Kible, that rooting method is only applicable to Gingerbread firmware.

    If you post your, "Version", details as per, "Rooting procedure", #2.0, I can point you to the stock Samsung firmware for your device model, CSC and Product codes.
     
  6. Dieter Kible

    Dieter Kible New Member
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    Great offer! However, as I did not have a SIM installed any more I did not do this *#1234# and hoped that the kernel information were sufficient (3.0.31-893450). Therefore I do not have this information available.
    Could I flash a suitable Gingerbread firmware instead and then upgrade to the appropriate Jelly Bean ROM?
    As I'm not really focussed on Jelly Bean, could I flash any other ROM such as from CWM?
    Or let me ask it differently, can I recue the device in any way?

    Thanks for your valuable help
    Dieter
     
  7. ironass

    ironass Well-Known Member
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    Those kernel details will be common to all the GT-i9100G firmwares I am afraid and therefore, no help in narrowing the precise firmware down.

    In that case, you could download the latest stock Samsung, unbranded Germany (DBT), firmware for the GT-i9100G... (there is also an Austrian firmware available if you are in Austria)

    ModelGT-I9100GModel nameGALAXY S IICountryGermanyVersionAndroidChangelist0Build dateN/AProduct codeDBTPDAI9100GXXLSRCSCI9100GDBTLS1

    Use the instructions, link and video in #1.7 of Jelly Bean update - Dummies Guide for details of how to flash the above firmware to your phone, using the Odin PC suite.
     
  8. Dieter Kible

    Dieter Kible New Member
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    Hi Ironass,

    sorry for replying slowly.
    Unfortunately there is no good news. The flash process did not work, although it started promising, after a couple of seconds a 'FAIL!' flashed up in Odin and the data transfer was terminated.

    This was the dialog in Odin3:
    <ID:0/004> Added!!
    <OSM> Enter CS for MD5..
    <OSM> Check MD5.. Do not unplug the cable..
    <OSM> Please wait..
    <OSM> I9100GXXLSR_I9100GXXLSP_I9100GDBTLS1_HOME.tar.md5 is valid.
    <OSM> Checking MD5 finished Sucessfully..
    <OSM> Leave CS..
    <ID:0/004> Odin v.3 engine (ID:4)..
    <ID:0/004> File analysis..
    <ID:0/004> SetupConnection..
    <ID:0/004> Initialzation
    <ID:0/004> Get PIT for mapping
    <ID:0/004> Firmware update start
    <ID:0/004> cache.img
    <ID:0/004> NAND Write Start!!
    <ID:0/004> factoryfs.img
    <ID:0/004> XmitData Fail..
    <ID:0/004> Complete(Write) operation failed.
    <OSM> All threads completed. (succeed 0 / failed 1)
    Showed 'FAIL!' after a couple of % progress bar (~15%)
    After more than 15 minutes without progress I disconnected the device

    Now the situtation seems to be even worse. Whenever I try to switch on the S2 I can only see an icon of a mobile phone connected to an icon of a PC with an attention mark on it. I cannot go into download mode any more no matter what I tried, even removing the battey for more than half an hour.
    Odin now repeatedly aborts the communication attempts right after being started:

    first lines as above
    <ID:0/004> Odin v.3 engine (ID:4)..
    <ID:0/004> File analysis..
    <ID:0/004> SetupConnection..
    <ID:0/004> Complete(Write) operation failed.
    <OSM> All threads completed. (succeed 0 / failed 1)
    Showed 'FAIL!' after 0% progress bar

    Any ideas?

    Thanks, sorry for bothering you again! But I have no idea where to find help now.
    Dieter
     
  9. ironass

    ironass Well-Known Member
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    Here are a few suggestions that should work. Ensure that you DO NOT have, "Repartition", enabled in Odin. Re-download the stock firmware to your PC in case you had a bad download. Only use the USB cable that came with the phone. Do not connect to your PC via a USB hub. Try a different USB port on your PC. DO NOT have Samsung's PC suites, Kies or Smart Switch, running in the background on your PC, you just need their drivers, not the actual programmes, running.
     
  10. tjmurph9

    tjmurph9 Member
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    Trying to root my S2 and got a fail on Odin. Appreciate any ideas.

    Kernel 3.0.31 - 889696
    Android 4.1.2

    Version
    PDA: I9100TDVLSM
    Phone: I9100TDVLS3
    CSC: I9100TVAULSF
    Build: Tues May 7 12.03.32 KST 2013

    Odin Message:
    <ID:0/004> Added!!
    <ID:0/004> Odin v.3 engine (ID:4)..
    <ID:0/004> File analysis..
    <ID:0/004> SetupConnection..
    <ID:0/004> Initialzation..
    <ID:0/004> Get PIT for mapping..
    <ID:0/004> Firmware update start..
    <ID:0/004> zImage
    <ID:0/004> __Xmit Write fail
    <ID:0/004> XmitData Fail..
    <ID:0/004> Complete(Write) operation failed.
    <OSM> All threads completed. (succeed 0 / failed 1)
    <ID:0/004> Removed!!

    Failed a number of times at Setup Connection, could not open COM port. Used Kies to reinstall drivers. Odin went as far as zImage. Waited 10 minutes with no obvious action, then pulled the USB cable. Phone has booted back to factory OK. My primary reason for rooting is to remove Samsung's bloatware.

    Murph
     
  11. ironass

    ironass Well-Known Member
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    Hello and welcome to Android Forums tjmurph9 :)

    You have the Australian variant, i9100T, of the Galaxy S2 on stock Vodafone firmware. Could you post a link to the kernel that you are using to root your phone.
     
  12. tjmurph9

    tjmurph9 Member
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    I chose the kernel suggested in your original post

    #1.8. Android Version 4.1.2, Jelly Bean.

    Download the Siyah v6.0beta5 .TAR kernel file and flash via Odin as follows in post #2.)​
     
  13. Hawker

    Hawker Well-Known Member
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    Change the port you are plugging your USB cable into, and use the Official USB cable and not a cheappo ebay jobbie
     
  14. ironass

    ironass Well-Known Member
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    That is the correct kernel for rooting the G900T on Android 4.1.2. You did unzip it and choose AP: in Odin and the Comm: is turning blue for a connection and the phone is in Download mode... just checking. ;)
     
  15. tjmurph9

    tjmurph9 Member
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    Thanks Hawker. Done both of those along my short journey.
     
  16. tjmurph9

    tjmurph9 Member
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    Five important little letters there, Ironass!!! "unzip". I read the note about unzipping .zip kernel files, but since the one I was using was a .TAR, I figured I'd follow EXACTLY what your instructions recommended. Everything else is as per your post. I'll give it another try tonight, but I reckon you've found the issue. Thank you in anticipation!

    By the way, thanks for your work in putting this resource together and in monitoring it to help us Luddites. Very much appreciated by this Luddite! :D
     
  17. tjmurph9

    tjmurph9 Member
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    All good now, Ironass. Odin doesn't recognise the extracted file, but when I returned to the .TAR archive it just worked! I don't think I did anything different. Anyway, the check app says it's rooted, so now I'm on to the next stage to get rid of as much of the crap as I can manage. Thanks again for the resource and for your patient assistance.
     

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