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Rooted Galaxy S7, now what?

Discussion in 'Android Rooting' started by oldun, Aug 20, 2017.

  1. oldun

    oldun Member
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    I rooted my Galaxy S7 SM-G930F using Odin and CM-Auto-Root-herolte-heroltexx-smg930f.tar.md5.

    After a couple of false starts I got the phone set up correctly and then started the rooting process which finally showed that the process was successful (according to the Odin log).

    Now the phone restarts showing a screen Samsung Galaxy S7, Powered by Android followed by another screen showing Samsung.

    To turn off the phone I must use Volume-down, Home and Power buttons. If I turn off the phone it automatically restarts.

    I have read various posts on rooting but I fail to see how I progress from here.

    Please advise a very inexperience but keen newbie.
     

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  2. James L

    James L Android Expert
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    You're in a bootloop.
     
  3. oldun

    oldun Member
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    Thanks for the offer but it now seems OK.

    I don't know what I actually did but eventually I found that by using volume-up, Home add Power keys I could enter a new mode and was able to clear the system and restore the OS. IT now works OK (as far as I can see) and all apps have been reloaded.

    I am now considering a custom rom but it still early days.

    Any helpful hints?
     
  4. oldun

    oldun Member
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    Back to square one. I installed a root checker and it tells me that the device is not rooted.

    I must give this more thought.
     
  5. svim

    svim Android Expert
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    Just curious as to just how you where trying to root your phone. When running Odin did you indeed see the green PASS message at the end of the process?

    Here's a pretty straight forward rooting guide for your S7:
    https://androidmtk.com/root-samsung-galaxy-s7-sm-g930f
    If you were using the latest version of Odin note that might be part of the problem so try using an older version. Odin isn't necessarily a great backwards-compatible utility so depending on what you're working on try using a version recommended here:
    http://www.droidviews.com/download-odin-tool-for-samsung-galaxy-devices-all-versions/
    Also note that some people have stated problems using Odin when they also have the Samsung Kies utility installed. (Not surprising as both utilities are trying to do the same task and using the same background resources.) So make sure if Kies is an active process running in the background be sure to kill it before running Odin.
    Once your S7 is rooted and if you're still thinking of flashing a custom ROM, you should install a custom Recovery. The stock Recovery applies only to the stock ROM.
    https://twrp.me/devices/samsunggalaxys7.html
    https://en.wikipedia.org/wiki/TWRP
    For your reference, most Samsung phones can be booted up into one of three states: the regular, typical start up running Android; Download Mode (from a cold boot simultaneously holding the Volume Down, the Home, and the Power buttons), used to upload ROMs; and Recovery Mode (from a cold boot simultaneously holding down the Volume Up, the Home, and the Power buttons), typically used for fundamental maintenance tasks. (Well, there is a fourth, quasi-startup, Safe Mode, but that doesn't apply to this instance of rooting your phone.) When you're going to be doing things like rooting and flashing ROMs you need to get used to booting up your phone into both Download and Recovery Modes.
     
  6. James L

    James L Android Expert
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    Agreed with the post above flash Twrp in Odin, auto reboot unchecked. Unplug it when it says pass. Hold volume down and power, as soon as it starts to reboot switch to volume up, home and power and you will see Teamwin. Install SuperSU 2.82 select reboot and then if you want the twrp app installed leave the boxes checked, if not uncheck them then reboot.

    If you have the TWRP app installed and don't want it then do this
    adb shell
    rm -r /data/data/me.twrp.twrpapp
    rm -r /system/priv-app/twrpapp
    in a rooted adb shell seems to delete it
     
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  7. oldun

    oldun Member
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    In answer to your questions I have written an description of the whole process.

    Procedure and Odin Logs

    1. Odin 3.0 started OK in Administrative Mode

    2. Phone set into Download Mode (warning screen) and then Vol-up key pressed to enter the Download Mode

    3. Phone connected to laptop running Odin and blue windows in ID ROM field signifies that the phone is recognised and connected. Log shows added.

    4. Pressing Options shows that AutoReboot and F.Rest Time are selected.

    5. Box next to AP selected and then AP is selected.

    6. A browser window appears, file CF-Auto-Root-herolte-heroltexx-smg930f.tar.md5 selected and opened.

    7. Log Shows

    <OSM> Enter CS for MD5

    <OSM> Check MD5.... Do not unplug cable

    <OSM> Please wait….

    <OSM> CF-Auto-Root-herolte-heroltexx-smg930f.tar.md5 is valid

    <OSM> Checking MD5 finished successfully….

    <OSM> Leave CS

    8. Start key pressed.

    9. Log shows

    <ID0/005> Odin Engine V(ID3.1005)

    <ID0/005> File analysis

    <ID0/005>Setup connection

    <ID0/005> Initialization

    <ID0/005> Get PIT for mapping

    <ID0/005> Firmware update start

    <ID0/005> Single download

    <ID0/005> Recovering img

    <ID0/005> NAND write start

    <ID0/005> cache img

    <ID0/005> ROT closed

    <ID0/005> RES OK!!

    <ID0/005> Removed

    <ID0/005> Removed Port 0

    <OSM> All threads completed. (Succeed 1/Fail 0)


    The Green Window above log screen shows PASS


    The phone restarts and shows 2 screens.

    Screen 1: Samsung Galaxy S7 and below Android

    Screen 2: Samsung (pulsing in brightness)


    The phone will now only respond to a power-off using Vol-down + Home + Power. It can be restarted using the Power key, Vol-down + Home + Power (Download Mode) or Vol-up + Home + Power (Recovery Mode).


    It consumes a lot of battery and gets much warmer than usual.


    The Recovery Mode Screen Shows


    Android Recovery (yellow font)

    Samsung heroltexx/herolte (yellow font)

    7.0/NRD90M/G930FFXXU1DQHC (yellow font)

    User/release keys (yellow font)

    Use volume up/down and power (yellow font)

    Reboot system now (blue font)

    Reboot to bootloader (blue font)

    Apply update from ADB (blue font)

    Apply update from SD card (blue font)

    Wipe data/factory reset (blue font)

    Wipe cache partition (blue font)

    Mount system (blue font)

    View recovery logs (blue font)

    Run graphics test (blue font)

    Power off (blue font)


    The Download Screen Shows



    At the top left hand corner

    Odin Mode (Red font)

    Download speed fast (Red font)

    Product name: SM-G930F (White font)

    Current Binary: Custom (White font)

    System Status: Custom (White font)

    Secured Download : Enabled (Blue font)

    Warranty: Void (Brown font)

    RP SWREV: B:1 S:0 K:0 (Brown font)


    Further down it shows

    Large Down Arrow

    Downloading

    Do not turn off target
     
  8. oldun

    oldun Member
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    I forgot to thank you all for the replies.

    I am very grateful.
     
  9. svim

    svim Android Expert
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    I'm still curious as to just which rooting method you initially attempted.
    But at this point try booting up into your phone's Recovery and select the 'wipe cache partition' option. In this instance that's kind of a long-shot but see if your S7 boots up normally. If you're still only able to get into Download or Recovery Modes than it appears as if the Android OS is messed up and you need to re-flash the stock ROM. You can get the appropriate stock ROM from either sammobile or updato:
    https://www.sammobile.com/firmwares/galaxy-s7/SM-G930F/
    or
    http://updato.com/firmware-archive-select-model?exact=1&q=SM-G930F
    At the bottom of the actual sammobile download page there are basic instructions on what steps to take to flash the ROM.
     
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  10. oldun

    oldun Member
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    I kept a log of events that occurred during rooting, see below

    Procedure and Odin Logs

    1. Odin 3.0 started OK in Administrative Mode

    2. Phone set into Download Mode (warning screen) and then Vol-up key pressed to enter the Download Mode

    3. Phone connected to laptop running Odin and blue windows in ID ROM field signifies that the phone is recognised and connected. Log shows added.

    4. Pressing Options shows that AutoReboot and F.Rest Time are selected.

    5. Box next to AP selected and then AP is selected.

    6. A browser window appears, file CF-Auto-Root-herolte-heroltexx-smg930f.tar.md5 selected and opened.

    7. Log Shows

    <OSM> Enter CS for MD5

    <OSM> Check MD5.... Do not unplug cable

    <OSM> Please wait….

    <OSM> CF-Auto-Root-herolte-heroltexx-smg930f.tar.md5 is valid

    <OSM> Checking MD5 finished successfully….

    <OSM> Leave CS

    8. Start key pressed.

    9. Log shows

    <ID0/005> Odin Engine V(ID3.1005)

    <ID0/005> File analysis

    <ID0/005>Setup connection

    <ID0/005> Initialization

    <ID0/005> Get PIT for mapping

    <ID0/005> Firmware update start

    <ID0/005> Single download

    <ID0/005> Recovering img

    <ID0/005> NAND write start

    <ID0/005> cache img

    <ID0/005> ROT closed

    <ID0/005> RES OK!!

    <ID0/005> Removed

    <ID0/005> Removed Port 0

    <OSM> All threads completed. (Succeed 1/Fail 0)


    The Green Window above log screen shows PASS


    The phone restarts and shows 2 screens.

    Screen 1: Samsung Galaxy S7 and below Android

    Screen 2: Samsung (pulsing in brightness)


    The phone will now only respond to a power-off using Vol-down + Home + Power. It can be restarted using the Power key, Vol-down + Home + Power (Download Mode) or Vol-up + Home + Power (Recovery Mode).


    It consumes a lot of battery and gets much warmer than usual.


    The Recovery Mode Screen Shows


    Android Recovery (yellow font)

    Samsung heroltexx/herolte (yellow font)

    7.0/NRD90M/G930FFXXU1DQHC (yellow font)

    User/release keys (yellow font)

    Use volume up/down and power (yellow font)

    Reboot system now (blue font)

    Reboot to bootloader (blue font)

    Apply update from ADB (blue font)

    Apply update from SD card (blue font)

    Wipe data/factory reset (blue font)

    Wipe cache partition (blue font)

    Mount system (blue font)

    View recovery logs (blue font)

    Run graphics test (blue font)

    Power off (blue font)


    The Download Screen Shows



    At the top left hand corner

    Odin Mode (Red font)

    Download speed fast (Red font)

    Product name: SM-G930F (White font)

    Current Binary: Custom (White font)

    System Status: Custom (White font)

    Secured Download : Enabled (Blue font)

    Warranty: Void (Brown font)

    RP SWREV: B:1 S:0 K:0 (Brown font)


    Further down it shows

    Large Down Arrow

    Downloading

    Do not turn off target
     
  11. oldun

    oldun Member
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    Thanks for the replies I will look into your very helpful suggestions.

    I am now seriously considering returning the phone to its original state (if possible by me!!) so you link to the stock rom is very helpful.
     
  12. oldun

    oldun Member
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    I have started looking into the stock ROM for my phone. When purchased it had a Samsung brand but was not carrier specific and so I would like to go back to this state. Which ROM do you recommend that I should I use, BTU, VIR, XEU, EE, H3G or Vodafone? I am at present with Three Mobile UK.
     
  13. svim

    svim Android Expert
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    Looking around online apparently BTU is for unbranded, multi-CSC ROMs.

    VIR - Virgin Mobile
    XEU - (Ireland)
    EE - EE Limited
    H3G - ?
    VOD - Vodaphone
     
  14. oldun

    oldun Member
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    I have had one of those eureka moments, don't say this never happens to us olduns.

    When using my original version of Odin I noticed that only the AP slot was accessible. The BL, CP and CSC slots were greyed out. I also noticed that above these 4 slots was a note saying that BL, AP, CP and Home-CSC must be used with new phones..

    This meant that I was trying to reinstate my phone with the original ROM using only the AP file.

    I deleted the Odin app and then reinstalled a slightly newer version. Using this newer version I could access all 4 slots so I tried again using BP, AP, CP and Home-CSC files and bingo it worked OK and I now have the phone in a very similar state to that before I managed to cock up the rooting.

    Many thanks to you all for being so helpful and patient with me.
     
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