Normal boot sequence results in boot loop few seconds after second logo (SAMSUNG) appears, then a brief screen flash (like a thin white horizontal line), then bzzz ... bzzz and so on.
When I try to enter Recovery Mode (hold middle volume & power simultaneously), wait for 2nd logo (SAMSUNG) to appear and release power button, it goes into boot loop before it can reach recovery mode. Specifically, when I release power button, it vibrates again, and goes back to two logo sequence, then a screen flash, the I get the dreaded one second cycle pulse vibrations.
When I try to Boot into Download Mode, the custom OS warning screen appears, I release the power button and within a few seconds it goes into boot loop
I suspect the hardware is fine. Is there any way to revive this by different means?
As background, I had first bootloop issues about a year ago and was able to resolve using the above method. I then upgraded from original ICS to Jelly Bean 4.1.2 which I installed using ODIN. The phone worked fine for like 6 months until this.
If you haven’t guessed, I’m a bit of a newb here.
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Ok so today my triumph stopped responding so i restarted it (took out the battery). then rebooted. upon reboot phone shuts down and now will hang at the motorola logo for about 10 min before boots but will shut back down due to the battery being dead(but had full charge when this started). Dont know what happened. So i try to get into clockworkmod to flash backup. cant get into it. the only thing i can do is get to the recovery.img file(pressing power+volume down). Other than that nothing.
also tried to boot with power pluged in. it stayed on but would not respond to any touches or button press except the lock button.
I have cwm 5.0.2.6 installed and tickerguy's cm7.
never had this problem till today. Any help would be appreciated.
a new development has occurred. now when i try to access recovery, the phone will just vibrate without stopping.
and i believe its stuck in a boot loop but without recovery i dont know anyway to exit the loop.
Are you able to get into download mode (power off then simultaneously press power button & vol- (should show polling))
Sent from my Triumph using xda premium
Yes i am able to get to download mode
Well after some tinkering (replacing the recovery image, assuming something corrupted it) i can now get to recovery, still takes 10 min to load it though. But i am unable to do anything in recovery because i have to press the menu button to confirm selection but the buttons wont respond. Some help would be appreciated.
Folks,
Here is the situation. I have a TF700T on Jellybean with the latest update. I unlocked the bootloader with the ASUS unlock tool. I flashed CWM Recovery and I then wanted to try the Crombi Kit-kat based ROM with f2fs and Overclocked Kernel. I used CWM Recovery to flash that ROM. In the Aroma installer for that ROM I chose to partition using f2fs for external and internal storage. The flash went ok and I booted into the ROM. Here is where the trouble began. I got a message from Android saying that it couldnt decrypt my file system or partition and asked if i wanted to restore the device to stock. I hit yes without thinking too much about it and it rebooted into the Android Logo and it is stuck there !!
I can't shut the device down because it restarts immediately into the white ASUS logo,then pauses for a few seconds, screen blinks, white asus logo again and then the Android Green Robot Screen again with a progress meter underneath it.
I tried holding down the Volume down and power for 10 seconds, the tablets reboots and repeats the process.. I never have an opportunity to enter recovery or wipe. I next tried holding the Volume UP button and holding the power button down for 10 seconds. The tablet buzzed and the screen shut off. I am guessing I am in APX mode.. I tried rebooting again by holding power button down and it does restart but goes into the same cycle, Screen with white ASUS Logo, Screen Blink, White Asus Logo and then Android Green Robot Screen again.. It is stuck in the screen and I cant even shut the tablet down Any idea what is going on ?
kchilaka said:
Folks,
Here is the situation. I have a TF700T on Jellybean with the latest update. I unlocked the bootloader with the ASUS unlock tool. I flashed CWM Recovery and I then wanted to try the Crombi Kit-kat based ROM with f2fs and Overclocked Kernel. I used CWM Recovery to flash that ROM. In the Aroma installer for that ROM I chose to partition using f2fs for external and internal storage. The flash went ok and I booted into the ROM. Here is where the trouble began. I got a message from Android saying that it couldnt decrypt my file system or partition and asked if i wanted to restore the device to stock. I hit yes without thinking too much about it and it rebooted into the Android Logo and it is stuck there !!
I can't shut the device down because it restarts immediately into the white ASUS logo,then pauses for a few seconds, screen blinks, white asus logo again and then the Android Green Robot Screen again with a progress meter underneath it.
I tried holding down the Volume down and power for 10 seconds, the tablets reboots and repeats the process.. I never have an opportunity to enter recovery or wipe. I next tried holding the Volume UP button and holding the power button down for 10 seconds. The tablet buzzed and the screen shut off. I am guessing I am in APX mode.. I tried rebooting again by holding power button down and it does restart but goes into the same cycle, Screen with white ASUS Logo, Screen Blink, White Asus Logo and then Android Green Robot Screen again.. It is stuck in the screen and I cant even shut the tablet down Any idea what is going on ?
Click to expand...
Click to collapse
Your case is very similar this user. Check this post to see if it helps, good luck...:fingers-crossed:
http://forum.xda-developers.com/showthread.php?t=2770727
Thank you !. I let the tablet sit like that for an hour and it got out of the Android Screen and tried booting the bad ROM install at which point I had the opportunity to shut the tablet down. Once I could shut it down, I could start the tablet into recovery and then I flashed the stock rom back from my nandroid backup.. Whew!!
LetMeKnow said:
Your case is very similar this user. Check this post to see if it helps, good luck...:fingers-crossed:
http://forum.xda-developers.com/showthread.php?t=2770727
Click to expand...
Click to collapse
Thanks a lot. It works. :good::good::good:
Unusual bootloop - can't access recovery OR fastboot but loops on "optimzing apps"
I had my US version OpO 64GB working with CM12 for quite a while, rooted and bootloader unlocked with TWRP (possibly 2.8.6) installed, then some months ago I tried upgrading to CM12.1 through CM updater. This failed miserably - The phone started bootlooping on "Optimizing apps n of N" - as soon as it finished optimizing apps, the phone would reboot and start optimizing again. Booting to safe-mode (Power + VolUpDown) also fails in the same way (though optimizing fewer apps).
I tried rebooting to recovery mode holding Power + VolDown but it just gives a quick buzz (vibration motor) at the "1+" screen and reboots. The same thing happens when I try to boot to fastboot mode with Power + VolUp. So I'm completely stuck. All the guides show being able to boot either to fastboot or recovery (soft-brick) or else the screen being completely black/unresponsive (hard-brick). My phone is neither of these!
I got frustrated enough that I've let it sit on the shelf for the past 6 months, but now I'd like to fix this. All help appreciated.
---danq989
Did you try clearing the cache and doing a factory reset ?
SpectreFang said:
Did you try clearing the cache and doing a factory reset ?
Click to expand...
Click to collapse
That's impossible for me to do since I can't get to launcher or recovery.
No acess to recovery?? Then better take it to service center... Atleast can u boot to fastboot mode or adb accesible then use oneplus one toolkits
---------- Post added at 11:34 AM ---------- Previous post was at 11:31 AM ----------
Install oneplus tool kit, while optimising apps it gets dectected by pc, just make it reboot mode & do reset.... Dnt worry this can be fixed, if all these seems messy then take it to service center
danq989 said:
I had my US version OpO 64GB working with CM12 for quite a while, rooted and bootloader unlocked with TWRP (possibly 2.8.6) installed, then some months ago I tried upgrading to CM12.1 through CM updater. This failed miserably - The phone started bootlooping on "Optimizing apps n of N" - as soon as it finished optimizing apps, the phone would reboot and start optimizing again. Booting to safe-mode (Power + VolUpDown) also fails in the same way (though optimizing fewer apps).
I tried rebooting to recovery mode holding Power + VolDown but it just gives a quick buzz (vibration motor) at the "1+" screen and reboots. The same thing happens when I try to boot to fastboot mode with Power + VolUp. So I'm completely stuck. All the guides show being able to boot either to fastboot or recovery (soft-brick) or else the screen being completely black/unresponsive (hard-brick). My phone is neither of these!
I got frustrated enough that I've let it sit on the shelf for the past 6 months, but now I'd like to fix this. All help appreciated.
---danq989
Click to expand...
Click to collapse
while things are loading, have u tried to hold vol up + power for 10 seconds or until the screen turns off and then hold vol down + power button until the oneplus logo?
Bradl79 said:
while things are loading, have u tried to hold vol up + power for 10 seconds or until the screen turns off and then hold vol down + power button until the oneplus logo?
Click to expand...
Click to collapse
Yes, just tried it. Same thing as described in my original post. When I hold power+volup the screen goes blank. I switch to power+voldown until the 1+ logo. At that point:
1. If I continue to hold the power+voldown key through the 1+ logo, the screen goes blank briefly, the phone vibrates once and reboots. If I continue to hold the power+voldown key, the vibrate&reboot cycle continues indefinitely
2. If I let go of either the power button, the voldown button, or both at or before the 1+ logo, the phone boots normally and goes to "Android is starting... Optimizing app n of 119). When the optimization finishes, the phone instantly reboots.
It's like the phone recovery is gone or inaccessible. Could this have to do with the phone tampering setting? As I said, I had this phone rooted and bootloader unlocked, working fine with CM12 for some time before trying an in-place upgrade to 12.1. That's when things went south.
---danq989
Hi,
I've been running a custom Rom on my Android without any trouble. I've never had an issue rebooting it. Today, I accidentally clicked Reboot Recovery instead of Reboot and it's been stuck on the Samsung Galaxy S7 Logo for half an hour. I've tried pressing Vol+ / Vol- / Power / Home together to force it off. It reboots and still stays stuck on the Logo. I'm unable to get into Download Mode and I'm unable to get into Recovery Mode.
I'm wondering what I can do to fix this?
Make it reboot, and as soon as your screen turns black switch to holding volume up and home (Not the power button).
You should be able to reach download mode.
Hello
My stock A515F/DS received an OTA about 3 days ago. After it restarted to finish the update, it got stuck in the boot logo. It will reboot on itself from time to time, and I was able to reboot it manually by pressing vol down + power, but I can't get into recovery or donwload mode (by pressing vol up as soon as it reboots). The screen flickers for a moment, but it reboots again. We are under quarantine by federal law so I can't get my phone to samsung. Is there any way you guys know to flash it without going into recovery/download mode? I don't mind losing my data, everything is on my drive account, I just want my phone again
Thanks in advance
I think there is no way without entering in download mode or bootloader. Try with this:
When the phone is on, no matter which state, press Vol down + power until it reboots. As soon as the screen goes black, change to Vol. up+power. If this is successful, you can then select Reboot to bootloader to enter in download mode.
If this doesn't work, the next solution is waiting the end of quarantine
AlexLink89 said:
I think there is no way without entering in download mode or bootloader. Try with this:
When the phone is on, no matter which state, press Vol down + power until it reboots. As soon as the screen goes black, change to Vol. up+power. If this is successful, you can then select Reboot to bootloader to enter in download mode.
If this doesn't work, the next solution is waiting the end of quarantine
Click to expand...
Click to collapse
Been trying this since day one, it seems like the phone tries to go into recovery as the screen flickers, but this lasts for less than a second and it reboots itself again.
Hi i have gala y a51. Also.
Suddenly it hanged up and restarted.ans stucked on boot screen after 10 sec it vibrates and screen goes dim(while still on boot logo) and notification bell rings and then goes black.
Cant get into recovery mode .
Plz help