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  1. Thread Author  Thread Author    #1  

    Default Phone stuck in boot loop after installing Cyanogenmod 11

    I recently flashed Cyanogenmod 10.2 onto my T-Mobile Galaxy S2 T-989, and then upgraded to CM 11. After upgrading, I am now stuck in a boot loop - when I press the power button, the phone goes into a cycle of vibrating, showing the Samsung logo for a second or two, and then going black.

    Can anyone help with the button combination to hit in order to enter TWRP? It would be really great if there was a solution!

    Thanks!
  2. #2  
    Golfdriver97's Avatar

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    Default Re: Phone stuck in boot loop after installing Cyanogenmod 11

    Quote Originally Posted by gwparcon View Post
    I recently flashed Cyanogenmod 10.2 onto my T-Mobile Galaxy S2 T-989, and then upgraded to CM 11. After upgrading, I am now stuck in a boot loop - when I press the power button, the phone goes into a cycle of vibrating, showing the Samsung logo for a second or two, and then going black.

    Can anyone help with the button combination to hit in order to enter TWRP? It would be really great if there was a solution!

    Thanks!
    Welcome to the forums.
    Should be Volume up and power. Pull the battery for several minutes and try that.

    Devices: Current: Nexus 5, Moto X, Galaxy Tab 2 (7.0); Retired: Galaxy S2 (Epic 4G Touch); Traded: Galaxy S3
    When I let go of what I am, I become what I might be - Lao Tzu
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  3. Thread Author  Thread Author    #3  

    Default Re: Phone stuck in boot loop after installing Cyanogenmod 11

    Quote Originally Posted by Golfdriver97 View Post
    Welcome to the forums.
    Should be Volume up and power. Pull the battery for several minutes and try that.
    Thanks very much for your reply! I've been trying lots of combinations, Vol up and power doesn't seem to do it, but I'm getting close with Vol up, Vol down, power, and Home. When I hit all of those at once after replacing the battery, it brings me to the full screen TeamWin logo for a couple of seconds, and then it goes away and back into boot loop. It seems like I'm almost getting into recovery, but I'm doing something not quite right.
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    Default Re: Phone stuck in boot loop after installing Cyanogenmod 11

    Quote Originally Posted by gwparcon View Post
    Thanks very much for your reply! I've been trying lots of combinations, Vol up and power doesn't seem to do it, but I'm getting close with Vol up, Vol down, power, and Home. When I hit all of those at once after replacing the battery, it brings me to the full screen TeamWin logo for a couple of seconds, and then it goes away and back into boot loop. It seems like I'm almost getting into recovery, but I'm doing something not quite right.
    Maybe flashing an older version of TWRP?

    Devices: Current: Nexus 5, Moto X, Galaxy Tab 2 (7.0); Retired: Galaxy S2 (Epic 4G Touch); Traded: Galaxy S3
    When I let go of what I am, I become what I might be - Lao Tzu
    Community Guidelines and also here
  5. Thread Author  Thread Author    #5  

    Default Re: Phone stuck in boot loop after installing Cyanogenmod 11

    Quote Originally Posted by Golfdriver97 View Post
    Maybe flashing an older version of TWRP?
    Forgive my ignorance, but how would I do that? I did try putting an older version of TWRP onto the SD card, but since I am stuck in the boot loop, I don't know how to flash it.
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    Default Re: Phone stuck in boot loop after installing Cyanogenmod 11

    Quote Originally Posted by gwparcon View Post
    Forgive my ignorance, but how would I do that? I did try putting an older version of TWRP onto the SD card, but since I am stuck in the boot loop, I don't know how to flash it.
    I would have thought the recovery could be flashed via Odin.

    Devices: Current: Nexus 5, Moto X, Galaxy Tab 2 (7.0); Retired: Galaxy S2 (Epic 4G Touch); Traded: Galaxy S3
    When I let go of what I am, I become what I might be - Lao Tzu
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  7. Thread Author  Thread Author    #7  

    Default Re: Phone stuck in boot loop after installing Cyanogenmod 11

    Quote Originally Posted by Golfdriver97 View Post
    I would have thought the recovery could be flashed via Odin.
    Thank you! I hadn't thought of that, so I gave it a shot. I don't have access to a Windows computer, so I tried installing Heimdall on a Mac, which I read is more or less equivalent. Looking around the web, though, I couldn't find the file that Heimdall could flash onto the phone. I don't know what kind of file it wants for the "Heimdall Firmware Package", and the TWRP and CWM packages that I tried end in .img, which Heimdall doesn't recognize.

    One time, so far, in my button pressing, I've gotten the phone to actually enter TWRP, but once I was in there, I didn't know what to do, and foolishly exited, not knowing how hard it was going to be to get back in. Is there any way to consistently enter TWRP?

    Thanks again, so much!
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    Default Re: Phone stuck in boot loop after installing Cyanogenmod 11

    Quote Originally Posted by gwparcon View Post
    Thank you! I hadn't thought of that, so I gave it a shot. I don't have access to a Windows computer, so I tried installing Heimdall on a Mac, which I read is more or less equivalent. Looking around the web, though, I couldn't find the file that Heimdall could flash onto the phone. I don't know what kind of file it wants for the "Heimdall Firmware Package", and the TWRP and CWM packages that I tried end in .img, which Heimdall doesn't recognize.

    One time, so far, in my button pressing, I've gotten the phone to actually enter TWRP, but once I was in there, I didn't know what to do, and foolishly exited, not knowing how hard it was going to be to get back in. Is there any way to consistently enter TWRP?

    Thanks again, so much!
    My fault, should have said something. Clear cache and factory reset.

    Devices: Current: Nexus 5, Moto X, Galaxy Tab 2 (7.0); Retired: Galaxy S2 (Epic 4G Touch); Traded: Galaxy S3
    When I let go of what I am, I become what I might be - Lao Tzu
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  9. Thread Author  Thread Author    #9  

    Default Re: Phone stuck in boot loop after installing Cyanogenmod 11

    Quote Originally Posted by Golfdriver97 View Post
    My fault, should have said something. Clear cache and factory reset.
    Ok, cool, how do I do that? At this point, when I'm pressing all three physical buttons to turn the phone on, after showing the Samsung logo, it shows the TeamWin logo for a couple of seconds, then goes into the boot loop, so I don't know how to clear the cache and do a factory reset. Are those operations I can do once I get into TWRP?
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    Default Re: Phone stuck in boot loop after installing Cyanogenmod 11

    Quote Originally Posted by gwparcon View Post
    Ok, cool, how do I do that? At this point, when I'm pressing all three physical buttons to turn the phone on, after showing the Samsung logo, it shows the TeamWin logo for a couple of seconds, then goes into the boot loop, so I don't know how to clear the cache and do a factory reset. Are those operations I can do once I get into TWRP?
    Yes.
    At this point I would almost consider flashing ClockWorkMod in Odin. Hopefully that can work.

    Devices: Current: Nexus 5, Moto X, Galaxy Tab 2 (7.0); Retired: Galaxy S2 (Epic 4G Touch); Traded: Galaxy S3
    When I let go of what I am, I become what I might be - Lao Tzu
    Community Guidelines and also here
  11. Thread Author  Thread Author    #11  

    Default Re: Phone stuck in boot loop after installing Cyanogenmod 11

    Quote Originally Posted by Golfdriver97 View Post
    Yes.
    At this point I would almost consider flashing ClockWorkMod in Odin. Hopefully that can work.
    Ok, thank you very much. I'll try using Odin next time I can get access to a Windows machine. I really appreciate your help!
  12. #12  
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    Default Re: Phone stuck in boot loop after installing Cyanogenmod 11

    Quote Originally Posted by gwparcon View Post
    Ok, thank you very much. I'll try using Odin next time I can get access to a Windows machine. I really appreciate your help!
    I keep forgetting...you can probably do that via Heimdall too.

    Sent from my Nexus 5 using AC Forums mobile app

    Devices: Current: Nexus 5, Moto X, Galaxy Tab 2 (7.0); Retired: Galaxy S2 (Epic 4G Touch); Traded: Galaxy S3
    When I let go of what I am, I become what I might be - Lao Tzu
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    Default Re: Phone stuck in boot loop after installing Cyanogenmod 11

    If you're installing a ROM update which will change versions, you need to wipe system as well and flash gapps for the new version.

    To answer your question, hold the volume rocker and the power button until the screen shuts off. When that happens, remove your finger from the power button but keep the volume rocker pressed until the Samsung logo appears and the depress. If you do it right, TWRP will appear
    Devices (Their ROMs and respective mods, if any):

    Samsung Galaxy SII (SGH-T989/Hercules): Carbon (4.4.2 Official Nightlies), UBER Kernel 2Ghz, ViPER4Android FX [daily driver]
    Samsung Galaxy S Blaze 4G (SGH-T679): Carbon (4.4.2 Official Nightlies), Operation Killjoy, ViPER4Android FX [secondary handset]
    Asus Nexus 7 (2013): Official 4.4.2 KitKat OTA, ViPER4Android FX
  14. Thread Author  Thread Author    #14  

    Default Re: Phone stuck in boot loop after installing Cyanogenmod 11

    Many thanks to both of you. I was able to get the phone into TWRP by holding Vol up and Vol down, and repeatedly hitting and releasing the power button until the TeamWin logo slid away to show the TWRP interface. Then, I flashed CM 10.2.

    Happy New Year, and thank you so much!
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    Default Re: Phone stuck in boot loop after installing Cyanogenmod 11

    You're welcome. Hope everything is going well.

    From a Sprint Moto X using AC Forums app

    Devices: Current: Nexus 5, Moto X, Galaxy Tab 2 (7.0); Retired: Galaxy S2 (Epic 4G Touch); Traded: Galaxy S3
    When I let go of what I am, I become what I might be - Lao Tzu
    Community Guidelines and also here
  16. #16  

    Default Re: Phone stuck in boot loop after installing Cyanogenmod 11

    Quote Originally Posted by gwparcon View Post
    I recently flashed Cyanogenmod 10.2 onto my T-Mobile Galaxy S2 T-989, and then upgraded to CM 11. After upgrading, I am now stuck in a boot loop - when I press the power button, the phone goes into a cycle of vibrating, showing the Samsung logo for a second or two, and then going black.

    Can anyone help with the button combination to hit in order to enter TWRP? It would be really great if there was a solution! phone off hold all three buttons let go of power after vibration that should be recovery. phone off hold volume plug into computer starts download mode


    Thanks!
  17. #17  

    Default Re: Phone stuck in boot loop after installing Cyanogenmod 11

    hi i have a problem with my galaxy s2 i have the cyanogenmod and i was going to sell it and i decided to do a factory reset then when i power up the cyanogenmod logo is stuck the logo keeps moving but it stays there. What can i do?
  18. #18  

    Default Re: Phone stuck in boot loop after installing Cyanogenmod 11

    hi i have a problem with my galaxy s2 i have the cyanogenmod and i was going to sell it and i decided to do a factory reset then when i power up the cyanogenmod logo is stuck the logo keeps moving but it stays there. What can i do?
  19. #19  
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    Default Re: Phone stuck in boot loop after installing Cyanogenmod 11

    Quote Originally Posted by yamilexcolon View Post
    hi i have a problem with my galaxy s2 i have the cyanogenmod and i was going to sell it and i decided to do a factory reset then when i power up the cyanogenmod logo is stuck the logo keeps moving but it stays there. What can i do?
    VOL UP + DOWN + Power button.. after the Samsung logo pops up release the power button, should boot into recovery. Wipe cache and dalvik, then wipe data/factory reset. Reboot and it should work after that

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