Constant reboots and corrupted recovery - Nexus 5 Q&A, Help & Troubleshooting

I have following problems with my Nexus 5 16 GB (unlocked, not rooted and everything stock)
1. It keeps rebooting occasionally (more often than I would count as normal) without any apparent reason.
2. Whenever I receive OTA update it fails to complete showing "Error" on while updating.
3. Tried factory resetting several times to no avail all symptoms remain the same.
4. Could not go to recovery mode. It shows a red triangle with exclamation mark.
5. Flashed stock images from Google.
6. Worked fine for few days (seldom reboots, though) and could go to recovery mode.
7. Now recovery is again corrupted. Cannot go to recovery mode and it keeps rebooting every now and then.
I don't know if it is a hardware problem or software. I need to sell this phone but want to be fair so need to exactly what is the problem and what could be a possible solution to perspective buyer.
Thanks for long post. Any help is much appreciated.

shahidhussain said:
I have following problems with my Nexus 5 16 GB (unlocked, not rooted and everything stock)
1. It keeps rebooting occasionally (more often than I would count as normal) without any apparent reason.
2. Whenever I receive OTA update it fails to complete showing "Error" on while updating.
3. Tried factory resetting several times to no avail all symptoms remain the same.
4. Could not go to recovery mode. It shows a red triangle with exclamation mark.
5. Flashed stock images from Google.
6. Worked fine for few days (seldom reboots, though) and could go to recovery mode.
7. Now recovery is again corrupted. Cannot go to recovery mode and it keeps rebooting every now and then.
I don't know if it is a hardware problem or software. I need to sell this phone but want to be fair so need to exactly what is the problem and what could be a possible solution to perspective buyer.
Thanks for long post. Any help is much appreciated.
Click to expand...
Click to collapse
You only have one issue here which is rebooting. If you flashed stock without restoring data /installing apps and it still reboots, send it for repair.
Sent from my Nexus 5 using Tapatalk

rootSU said:
You only have one issue here which is rebooting. If you flashed stock without restoring data /installing apps and it still reboots, send it for repair.
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
Yes I flashed everything stock (without keep any data/apps) and it still reboots. Initially I checked by entering into recovery mode and all was OK but now a red triangle. So it is a hardware problem
Thanks for your quick reply

Stock recovery always has that symbol
Sent from my Nexus 5 using Tapatalk

got the same problem since 4.4.3 came out, even got a replacement phone that does the same.. symptom a soft reboot, occasionally hard, every one or two days.
running 4.4 or 4.4.1/2 the problem disappears
only thing i found that helps is turning location on and having mobile settings to allow 3g.. i can go for up to a week like this before a reboot.. my personal settings of 2g only and location off makes it worse for some unknown reason.

Related

Stuck at "erasing" when doing a factory reset?

Anyone else had issues performing factory resets? My Nexus 5 seems incapable of completing it. So far I have tried doing a factory reset from the settings menu 4 times. Every single time it locks up on the erasing step. I don't mean it takes a little longer. I have let it sit for almost half an hour and the little android robot sits there taunting me.
Every time I have had to manually go into the bootloader and sideload a factory image, which works fine.
Any ideas why this problem is occurring? Faulty memory maybe?
Same issue here, phone is getting nice and warm but the little robot just sits there twiddling his antennae. Forced restart either normally or into recovery mode lands me right back on the erasing screen, looks like nothings going to happen unless I intervene another way. Any ideas?
Try pushing the system.img using fastboot. Might be best to start over and do a clean install.
Have you tried doing a factory reset in recovery instead?
Sent from my Nexus 5 using Tapatalk
Same problem
I have the same problem with the loop at the erasing screen. It will not go into recovery so that I can fix it. I tried flashing the Stock Rom again but no use. Please help me or at least give me some pointers what to try next.
jizkidjnr said:
Same issue here, phone is getting nice and warm but the little robot just sits there twiddling his antennae. Forced restart either normally or into recovery mode lands me right back on the erasing screen, looks like nothings going to happen unless I intervene another way. Any ideas?
Click to expand...
Click to collapse
martinancevski said:
I have the same problem with the loop at the erasing screen. It will not go into recovery so that I can fix it. I tried flashing the Stock Rom again but no use. Please help me or at least give me some pointers what to try next.
Click to expand...
Click to collapse
I have the same problem
I'm sure you wait a long time...but if not, mine probably took 10-15 minutes to finish...
Sent from my Nexus 5 using xda app-developers app
i have the same problem
What is your recovery? Version # also? How did you root? <--- this goes to the rest of you guys too because it seems like its happening to more than one person.
Follow this: Maybe flash the stock recovery found in here http://forum.xda-developers.com/showthread.php?t=2513701
fastboot flash recovery C:/image-hammerhead-krt16m/recovery.img
^^ the command
edit: on second thought start over.
lpforte said:
Anyone else had issues performing factory resets? My Nexus 5 seems incapable of completing it. So far I have tried doing a factory reset from the settings menu 4 times. Every single time it locks up on the erasing step. I don't mean it takes a little longer. I have let it sit for almost half an hour and the little android robot sits there taunting me.
Every time I have had to manually go into the bootloader and sideload a factory image, which works fine.
Any ideas why this problem is occurring? Faulty memory maybe?
Click to expand...
Click to collapse
hello
I have the same exact problem
I'm completely stock and I want to reset all so I do factory reset from menu setting, backup & reset
And since, my nexus stucked in "erasing...."
I have tried flashing factory image according to this guide, succeeded, but then still stucked in android logo with endless progress bar (but this time without "erasing....")
Need help how to restore it
All I want is to factory reset
How did you actually sideload factory image?
thanks
iori said:
hello
I have the same exact problem
I'm completely stock and I want to reset all so I do factory reset from menu setting, backup & reset
And since, my nexus stucked in "erasing...."
I have tried flashing factory image according to this guide, succeeded, but then still stucked in android logo with endless progress bar (but this time without "erasing....")
Need help how to restore it
All I want is to factory reset
How did you actually sideload factory image?
thanks
Click to expand...
Click to collapse
ADB sideload: place the rom you want to flash in the fastboot folder and in the phones recovery select adb sideload, then on the pc in cmd type: adb sideload namerom.zip and it will start flashing.
gee2012 said:
ADB sideload: place the rom you want to flash in the fastboot folder and in the phones recovery select adb sideload, then on the pc in cmd type: adb sideload namerom.zip and it will start flashing.
Click to expand...
Click to collapse
thanks
but i finally found out that the stock recovery was somehow corrupted after factory reset
then I unlocked the bootloader and flashed TWRP recovery, and voila! my device booted normally
Nexus 5 hung at reset
iori said:
hello
I have the same exact problem
I'm completely stock and I want to reset all so I do factory reset from menu setting, backup & reset
And since, my nexus stucked in "erasing...."
I have tried flashing factory image according to this guide, succeeded, but then still stucked in android logo with endless progress bar (but this time without "erasing....")
Need help how to restore it
All I want is to factory reset
How did you actually sideload factory image?
thanks
Click to expand...
Click to collapse
Exactly the same problem here. Nexus 5 running 4.4.2 kept powering off randomly roughly once a day. Attempted a factory reset and it got stuck at erasing. Having unlocked the bootloader and following the steps to unlock and reboot, I have a progress bar with the animated android icon, apparently stuck at the same stage, but without the "erasing" caption.
As far as I'm concerned, I can nothing with the phone at present short of taking it back, though they'll likely take issue with my attempts to rectify myself
mannschaftpag said:
Exactly the same problem here. Nexus 5 running 4.4.2 kept powering off randomly roughly once a day. Attempted a factory reset and it got stuck at erasing. Having unlocked the bootloader and following the steps to unlock and reboot, I have a progress bar with the animated android icon, apparently stuck at the same stage, but without the "erasing" caption.
As far as I'm concerned, I can nothing with the phone at present short of taking it back, though they'll likely take issue with my attempts to rectify myself
Click to expand...
Click to collapse
I'll add that I've also tried the Nexus Root Toolkit v1.8.0 to flash stock. Appears to go fine, recreating the file system and loading software, then as soon as it gets to the "erasing cache" step it just sits there for hours and makes no progress.
I know I probably shouldn't promote toolkits but you can always try this. Seems to have worked for a lot of people.
http://forum.xda-developers.com/showthread.php?t=2513937
Sent from The Deathstar
Same thing happened to me yesterday. My N5 is rooted, running stock rom and recovery. I had some corrupted app date showing in Titanium that I could not remove that were causing a Play store issue for me. I backed up my phone with TB and ran a factory reset in settings. The phone was stuck on the 'erasing' screen for maybe 20 minutes, so I put the phone in fastboot and from there back into recovery. This took me back to the 'erasing' screen to my dismay. I put the phone down and started searching for a solution online, but then I noticed after about 7 minutes the erase process had finally finished on its own and the phone rebooted normally again.
Based on what others are saying in this thread it appears the factory reset process via settings or stock recovery can hang sometimes. If you power off, start the phone in fastboot and select recovery again, I'm guessing the factory reset process restarts and hopefully it will then work properly the next time, like it did for me.
Well when I did a factory reset from settings, it took nearly 20-25 minutes to finish. The next time I did a reset, it completed within 10 minutes
I guess this problem occurs randomly.
Be patient
My guess is that you just need to be patient -- my device took nearly 45 minutes to reset. It seems to me that the time required is proportional to either the amount of data or the number of files you have on the device. My device had a mix of large files (such as musics and photos) and many many small files (sensor data log files), so it's hard for me to say which of those contributed more to the long reset time.
Based on what others are saying in this thread it appears the factory reset process via settings or stock recovery can hang sometimes. If you power off, start the phone in fastboot and select recovery again, I'm guessing the factory reset process restarts and hopefully it will then work properly the next time, like it did for me.
Click to expand...
Click to collapse
This worked for me too. On the initial 'Return to factory defaults' it got stuck for about 45 minutes. I then follow the advice above:
- Put the N5 in Fastboot by pressing: Vol. Up + Vol. Down + Power
- Select: Recovery and press on Power to proceed
- Phone reboots, still into the 'Androidman' but it seems that the 'Return to factory defaults' also restarts.
- Wait about 10 minutes and the Phone powers down automatically. Upon startup you enter the 'Initial configuration menu' so the factory reset has been completed.
Still stuck on Erasing screen, running out of options
Hello,
I am a newbie with zero developer knowledge and received my Nexus 5 in the mail yesterday. I liked the phone specs and that is the only reason I got it. I left it alone while it charged up and the first thing I did once it was finished was perform a Factory Reset (it was a "like new" phone so I just wanted to be safe) and have been stuck on the Erasing screen ever since. Pressing Vol- and Power button does take me to the bootloader screen, however, any option I choose by pushing the power button, such as Recovery Mode, sends me back to the Erasing screen. Pushing Vol+, Vol-, and Power shuts the phone off completely. Holding the Power button down does nothing more than restart the phone into the Erasing screen. I have also let the phone die twice and as soon as it has enough juice to come back on, it goes straight to the Erasing screen. Everything on the phone is stock and it is completely unrooted. The bootloader screen also indicates it is unlocked. I have attempted to flash it as per instructions I have found on here but I am unable to download the stock factory images. It gets to about 90% before the install fails and I have tried to install three times already. I do have the 15 Second ADB installed, however. I assumed the install of the factory images failed because I don't have WiFi and I'm running completely off of limited 3G data (I live in the middle of no where with no high speed internet to speak of). So in lieu of all that I have attempted, is there ANYTHING at all that can be done to get the phone off of this Erasing screen? Or do I just need to try and return it because it's useless at this point? I did at first let the process run but it's now been 24 hours stuck on this Erasing screen with no improvement. I'm fairly certain it runs KitKat 4.4.0.

[Q] Restart loop(not bootloop) - really weird

Hey lads,
I got a really weird problem and I've tried nearly everything I can think of. I had EMUI 2.3(b121sp06) and I tried the online OTA update to b307 if I remember right(was automatically suggesting the update) and at the update screen it loaded to about 99% and then stopped. Said not to press power while on this screen but obviously it wasn't going to finish. So I reset the phone and it started the "recovery loop", so basically keep trying to apply the update. I had to flash CWM to break out and flashed the whole system by hand(recovery,system,boot,cache,cust and userdata img files) and it starts up but it keeps resetting and seemingly it's random. Android boots up, I don't touch the phone--> boom reset. Weird thing is it even does it in recovery.
If I really want to explain the problem it's like as if my finger got stuck on the power button(that naturally made me think that the button might be f*cked), but booting into fastboot and not having resets cleared my suspicion. What I also noticed is that every time it boots up it doesn't recognize the sim card and I have no signal or whatsoever.
Tried multi tool unbricking method -> doesn't work
Tried factory reset from stock recovery(had to be fast so it doesn't reset before) ->doesn't work
Tried wiping dalvik cache and factory reset from CWM ->doesn't work
Tried killing battery by letting it keep resetting -> battery drained, reset loop stopped ->put the phone on charger->reset loop started again
I have no f*cking clue how can I get out of this, will keep trying though. Any help is appreciated, thank you!
Hi
Did you try to remove the Sd Card ? Honor 6 reboot is often due to faulty SD Card.
Which model do you have ? L04 ?
B307 upgrade sure ?
Seb
Yes, that was my first idea, still does it though. I have the L02 and I'm not positive it was b307, but it started with 3, could be b303 if there is one.
I don't know for L02 but for L04 there is a Full ROM that you can flash with the three buttons method. (Vol+,Vol-, power and put the ROM in /dload folder on the SD card).
Maybe there is such thing for L02 ?
There is, but as I said the phone restarts even in recovery. It's like the phone restarts every 30 secs except for fastboot.
if it's not SD card or internal flash problem so, it seems to be hardware related to me (
Would make sense but it occurred only after I tried OTA. Would be really surprised if that killed that hardware :-/
xXPhoenixXx said:
Would make sense but it occurred only after I tried OTA. Would be really surprised if that killed that hardware :-/
Click to expand...
Click to collapse
Have u fixed the issue yet????
kamalnath93 said:
Have u fixed the issue yet????
Click to expand...
Click to collapse
Unfortunately not, I'm out of ideas, trying to negotiate with the seller to sort something out, I think the phone is beyond saving
Same thing happened with me. Don't have any solution. Have you fixed it?
xXPhoenixXx said:
Hey lads,
I got a really weird problem and I've tried nearly everything I can think of. I had EMUI 2.3(b121sp06) and I tried the online OTA update to b307 if I remember right(was automatically suggesting the update) and at the update screen it loaded to about 99% and then stopped. Said not to press power while on this screen but obviously it wasn't going to finish. So I reset the phone and it started the "recovery loop", so basically keep trying to apply the update. I had to flash CWM to break out and flashed the whole system by hand(recovery,system,boot,cache,cust and userdata img files) and it starts up but it keeps resetting and seemingly it's random. Android boots up, I don't touch the phone--> boom reset. Weird thing is it even does it in recovery.
If I really want to explain the problem it's like as if my finger got stuck on the power button(that naturally made me think that the button might be f*cked), but booting into fastboot and not having resets cleared my suspicion. What I also noticed is that every time it boots up it doesn't recognize the sim card and I have no signal or whatsoever.
Tried multi tool unbricking method -> doesn't work
Tried factory reset from stock recovery(had to be fast so it doesn't reset before) ->doesn't work
Tried wiping dalvik cache and factory reset from CWM ->doesn't work
Tried killing battery by letting it keep resetting -> battery drained, reset loop stopped ->put the phone on charger->reset loop started again
I have no f*cking clue how can I get out of this, will keep trying though. Any help is appreciated, thank you!
Click to expand...
Click to collapse
Its might be a battery problem Or power flex cable. Try to turn on the phone during charge
guys im facing the same problem now... waiting for any solutions
I have tried stop & uninstall some app
I've tried as quickly as I can when the phone (nokia x) is on, then I stop> uninstall I consider potentially cause this problem (facebook, whatsapp, uc browser) and then it managed to prevent the continuous restarts. but problems arise even though the application had me uninstall and then I restart the phone. and it is back again, I uninstalled the app that has remained with the error settings and restart repeatedly. who knows what else : '(
xXPhoenixXx said:
Hey lads,
I got a really weird problem and I've tried nearly everything I can think of. I had EMUI 2.3(b121sp06) and I tried the online OTA update to b307 if I remember right(was automatically suggesting the update) and at the update screen it loaded to about 99% and then stopped. Said not to press power while on this screen but obviously it wasn't going to finish. So I reset the phone and it started the "recovery loop", so basically keep trying to apply the update. I had to flash CWM to break out and flashed the whole system by hand(recovery,system,boot,cache,cust and userdata img files) and it starts up but it keeps resetting and seemingly it's random. Android boots up, I don't touch the phone--> boom reset. Weird thing is it even does it in recovery.
If I really want to explain the problem it's like as if my finger got stuck on the power button(that naturally made me think that the button might be f*cked), but booting into fastboot and not having resets cleared my suspicion. What I also noticed is that every time it boots up it doesn't recognize the sim card and I have no signal or whatsoever.
Tried multi tool unbricking method -> doesn't work
Tried factory reset from stock recovery(had to be fast so it doesn't reset before) ->doesn't work
Tried wiping dalvik cache and factory reset from CWM ->doesn't work
Tried killing battery by letting it keep resetting -> battery drained, reset loop stopped ->put the phone on charger->reset loop started again
I have no f*cking clue how can I get out of this, will keep trying though. Any help is appreciated, thank you!
Click to expand...
Click to collapse
Hey I tried to root my phone and its stuck in the same restart loop. I am trying to install some roms, CM or stock. U also try and let me know if it works.
Kuber.ksp said:
Hey I tried to root my phone and its stuck in the same restart loop. I am trying to install some roms, CM or stock. U also try and let me know if it works.
Click to expand...
Click to collapse
my phone is working only on charhing.. pufffff
snrtrt said:
my phone is working only on charhing.. pufffff
Click to expand...
Click to collapse
Did you follow the guide here?
Sent from my Honor 8 using XDA Labs
In the past my battery lost it's endurance pretty much. Furthermore I've read that a defective battery causes lots of weird behaviours on our Honor 6, which was the same to mine.
In my case a replacement of the battery worked well, to get my Honor 6 back to life:
https://www.youtube.com/watch?v=ceyzXavxFAw
It's not that difficult and lasts approx. 30-45 mins. Spare Batteries are available for 6 - 10 bucks on ebay or directly from the chinese internet stores.
Borg666 said:
In the past my battery lost it's endurance pretty much. Furthermore I've read that a defective battery causes lots of weird behaviours on our Honor 6, which was the same to mine.
In my case a replacement of the battery worked well, to get my Honor 6 back to life:
It's not that difficult and lasts approx. 30-45 mins. Spare Batteries are available for 6 - 10 bucks on ebay or directly from the chinese internet stores.
Click to expand...
Click to collapse
It's really important that we use original chargers for the health of our device.

Still Reboots in Marshmallow

Has anybody been running into their phone rebooting with Marshmallow? Mine is still doing it. Already tried re flashing and clearing cache.
Treizez34 said:
Has anybody been running into their phone rebooting with Marshmallow? Mine is still doing it. Already tried re flashing and clearing cache.
Click to expand...
Click to collapse
I am having the same issue. Random reboots.
I already install the 6.0 three times. one sideload and two fresh installs (full wipe + factory images). I even tried to roll back to lollipop and then update again.... same problem =(
device:
Nexus 5 - 32gb international + moto360
Sorry for my English.
I have the same problem with the Nexus 5 32GB D820.
Marshmallow clean installation ran smoothly yesterday, today began to randomly reboot.
I tried to make a factory reset and left in a bootloop.
I had to re-flash the factory image.
Let's see if it happens again.
Likely defective power button
My nexus 5 32gb is also randomly rebooting on android 6.0
The same problem with D821 16 Gb. 4 times clean installation. 1 time step-by-step installation for each part of factory image - no result. Random reboots.
There is no random reboot software bug, only faulty key
GR0S said:
There is no random reboot software bug, only faulty key
Click to expand...
Click to collapse
What do you mean with faulty key? Faulty like hardware or faulty like software? Cause I have my Nexus for 1,5 years and had never problems with power button at all. The problem comes only with Marshmallow.
---------- Post added at 07:22 AM ---------- Previous post was at 06:47 AM ----------
So, there is no full restart. If you press the power button for 10 seconds, the phone will restart and you'll hear a little vibration and see "Google" logo, after that Marshmallow animation appears. Faulty key can only cause full restart effect. But in Marshmallow I have only the shell restarts, i.e. the phone restarts with Marshmallow animation (not with vibration and "Google" logo) and this lasts 3-5 seconds. This is definitely software bug.
Are we talking about M, flashed with fastboot, and almost no user apps installed and no mods (root, custom kernel, etc)?
Because if we are, there are no random reboots.
Sent from my Nexus 5 using Tapatalk
beekay201 said:
Are we talking about M, flashed with fastboot, and almost no user apps installed and no mods (root, custom kernel, etc)?
Because if we are, there are no random reboots.
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
Exactly. Flashed with fastboot, no mods, no root, no any customs. Only user apps. But you are right. I'm testing all my apps and I've found 2 weather apps. They probably caused the reboots. I'm not sure about it, cause I'm looking into all my apps.
its not a defective power button.
I roll back to lollipop and the random reboot stopped.
I did another try with marshmallow, this time with sideload installation and full wipe after. At the beginning i get two random reboots, but now it seems to be ok. no more random reboots.
SOLVED. The problem was caused by Weather Live application (https://play.google.com/store/apps/details?id=com.apalon.weatherlive). With first installation of Android M I noticed that the app shows error message. Now, when I know cause and effect, I read feedbacks in Play Market and see other people reports crashes in Marshmallow with this app. So, if you have random restarts in Android M and Weather Live app installed, then try to delete it and wait if system will be stable.
dr_stevens said:
SOLVED. The problem was caused by Weather Live application. With first installation of Android M I noticed that the app shows error message. Now, when I know cause and effect, I read feedbacks in Play Market and see other people reports crashes in Marshmallow with this app. So, if you have random restarts in Android M and Weather Live app installed, then try to delete it and wait if system will be stable.
Click to expand...
Click to collapse
I found the same issue. I'm a registered user of Weather Live, but I've found that the app is causing numerous crashes after I upgraded my Nexus 5 to Android 6 ( Marshmallow). I ran a bug report and searched it for 'FATAL EXCEPTION:', I can see that everytime there is a crash, one of the threads affected belongs to Weather Live. What I then get is a restart of the User Interface, so it goes into the 'android' animation you normally see on boot. The phone stays up because the System Uptime is not reset.
I've uninstalled the app for the moment to see if that cures the issue.
i am experiencing random reboots with my Spice Dream Uno and ended up in this forum while searching for my cause. first i thought its my device got hardware issue but it never happened before in lollipop or kitkat. it seems just like a possible hardware fault too and phone will be in bootloop , then cant even power on the display(backlight flluctuates,with black screen). when i pull the battery and reinsert after few minutes the phone starts normally. seems like Marshmallow has critical campatibility issues with some applicationsThe crash never happens in same application for me.And i have no roots ,customs etc..Came to 6.0 via OTA from lollipop.
My device dont have any issues upto now(its been an year).
I've been noticing it with a very minimal base of packages. Seems to only happen shortly after waking from deep sleep so I highly suspect doze. The phone will be fine... you set it aside... it enters doze deep sleep... phone wakes, you unlock... then bam, reboots, and enters boot loop at the Google splash screen. I've already done a factory reset, will be attempting a fastboot reflash with the new November system image today.

Galaxy S6 - freezing and rebooting 50+ times a day

I've got a Vodafone UK version SM-G920F that has recently started to freeze, crash and reboot constantly.
I managed to back up my data and perform a factory reset from the Setting page, but it crashed 10+ times during the install process (would freeze at various different stages, either rebooting on its own, or requiring a Vol Down+Power reset)
I'm now on a fresh install, but it's still rebooting constantly. I managed to use it like normal for an hour today, but right now it's just rebooted 3 times and won't even get past the Samsung loading screen without several Vol Down+Power resets.
What other options do I have? And is anyone aware of a known hardware issue that could cause this?
I was considering flashing a different ROM, but I'm scared it would reboot during the process and corrupt something...
robjg said:
I've got a Vodafone UK version SM-G920F that has recently started to freeze, crash and reboot constantly.
I managed to back up my data and perform a factory reset from the Setting page, but it crashed 10+ times during the install process (would freeze at various different stages, either rebooting on its own, or requiring a Vol Down+Power reset)
I'm now on a fresh install, but it's still rebooting constantly. I managed to use it like normal for an hour today, but right now it's just rebooted 3 times and won't even get past the Samsung loading screen without several Vol Down+Power resets.
What other options do I have? And is anyone aware of a known hardware issue that could cause this?
I was considering flashing a different ROM, but I'm scared it would reboot during the process and corrupt something...
Click to expand...
Click to collapse
Maybe a battery issue?
a friend just gave me his very same model phone with the very same issues.. if I find out anything I'll tell you here, or if you solve it first please write down what you did.
Thanks Vibbuz.
I've been trying to download a stock firmware to flash via Odin, but download speeds from Updato are really bad.
So I managed to flash a firmware after installing Odin on a Windows laptop (painful trying to get it to work on my Mac)
Firmware installed OK, but after boot I was getting a constant "com.sec.epdg" pop-up box that wouldn't let me use the phone at all. Not sure if that's due to the tsar3000 firmware?
Wiped the cache and did a factory reset after booting into recovery, and now it's stuck in a boot-loop again (95% of the time it hangs at the Samsung logo animation)
Just tried using SamFirm v0.3.6 to find the correct file. Downloaded a 4gb file, but several attempts to extract only gives BL, CP, CSC files but no AP (throws up an Unknown Error during process).
So still stumped!
Yet another update. Left Updato running overnight and downloaded a firmware.
Flashed it with Odin, claims to have succeeded but phone then reboots and hangs at "Erasing" stage (Android logo is spinning, then stops)
I'm starting to think it's pretty broken...
I've been having this exact same issue since June. If your phone happens to boot try activating power saving mode (to reduce cpu speed) as soon as possible.
It seems that doing that diminished the frequency in which my phone rebooted. If it also helps you it might be a faulty battery that can't provide enough voltage. (I'm not 100% sure on this part though, just thought of it because of the apple batteries drama)
Please post your results! Looks like a lot of people are affected by this and it would be great if we could find the cause of the problem.
I just read your thread actually! Sounds very similar to mine.
I've got nowhere. I don't think it's hard-bricked as I can still access Odin mode on the phone, and sometimes boots to Recovery, but it freezes and various different points and is currently unusable (either freezes at Samsung logo, "Erasing" part after installing firmware, or once it started to run though new device setup then froze).
Went ahead and bought an S8, but still want to fix the S6!
robjg said:
I've got a Vodafone UK version SM-G920F that has recently started to freeze, crash and reboot constantly.
I managed to back up my data and perform a factory reset from the Setting page, but it crashed 10+ times during the install process (would freeze at various different stages, either rebooting on its own, or requiring a Vol Down+Power reset)
I'm now on a fresh install, but it's still rebooting constantly. I managed to use it like normal for an hour today, but right now it's just rebooted 3 times and won't even get past the Samsung loading screen without several Vol Down+Power resets.
What other options do I have? And is anyone aware of a known hardware issue that could cause this?
I was considering flashing a different ROM, but I'm scared it would reboot during the process and corrupt something...
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Click to collapse
Does it have twrp? Try a non stock ROM and kernel
So did anyone manage to find an issue in this rebooting. I am having the same issue.
damir_nis said:
So did anyone manage to find an issue in this rebooting. I am having the same issue.
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Click to collapse
Hi I have same Problem I send the my s6 for repairmen that Saied me this problem related to mobile Hard drive.
I didn't believe it and try some official rom and a rom from Philippine GLB solve my problem for 3 M/o but now developed as same problem whitout any successful rom installation.
I think this problem from incompatibility google play store version to my rom. please flash a custom rom without google apps and immediately after installation turned off data and Wi-Fi internet after 2 day whit sim card whit out any change in setting can use it.
Hello,
anyone found some kind of solution? Happened to me also - freezing, restarts and then my S6 stopped working.. Sometimes I can boot to recovery menu, sometimes it boots up to android (and then freezes again), but the chances are almost non existing. Service man told me the same thing as @ghasemzm - eMMC failure. Yes, it is completely possible, but i don't wanna believe it, because they only tried to reflash the rom. I've made some "google research" and found that there were some issues in power IC on S6/S6E. Could this be related to it?
ghasemzm said:
Hi I have same Problem I send the my s6 for repairmen that Saied me this problem related to mobile Hard drive.
I didn't believe it and try some official rom and a rom from Philippine GLB solve my problem for 3 M/o but now developed as same problem whitout any successful rom installation.
I think this problem from incompatibility google play store version to my rom. please flash a custom rom without google apps and immediately after installation turned off data and Wi-Fi internet after 2 day whit sim card whit out any change in setting can use it.
Click to expand...
Click to collapse
Will test the theory and let the group know.
So i have installed philipines latest update 6.0.1 i think with PIT file provided on Sammobile.
I have tested it for a day with normal ussage like i set up every other phone and it still continued restarting.
Figured out let me test with no google account signed in and the phone is working perfectly. For a full day.
So i dont know what the problem is but i will try again with google account tomorrow for a day see what happens.
After that will install 7.0.1 uk update with PIT file for it and test with that.
I have the same problem and I am quite sure that it is the mobile hard drive.
I tried to use F2FS but didn't find a working rom for that.
Samsung refused repair because of root.... Never Samsung again!
same issues here - any solutions found? My best guess is hardware fault...

Galaxy S7 G930U Unlocked stuck in boot loop - already flashed successfully but no fix

I'm really hoping you guys can help me out here. This is an S7 I bought from a Best Buy when I visited the US in 2017, and I got the Unlocked version so I would be able to use it back in my home country. Unfortunately, this is the second time I've had trouble with it in a span of 4 months and the first time it was a hardware problem and ended up quite expensive to get fixed.
Today I was using my phone normally when I decided to use the Google instant translation to translate something on my computer screen. That caused my phone to freeze, restart, and then tell me I was using an unauthorized flash and it was going to be locked, or something like that. Even after restarting a few more times, the phone would never get past that screen. I proceeded to factory reset/cache reset and from then on the phone just got stuck in a boot loop.
I learned that the fix would be to flash the phone. After a lot of work I found the G930UUESACSI1-20190930144640 firmware (the XAA version, for Unlocked) and successfully used Odin 3.13 at the Download Mode screen to flash my phone. It then restarted, went back to the blue screen, started installing some updates, when it was 100% it restarted again. Unfortunately, the loop remained. Galaxy S7 logo first, then the Samsung logo, then it just repeats.
I have also tried turning the phone off with the Recovery screen shut down option (since I can't seem to be able to turn it off with the power button right now), wait a few minutes, then turn it back on. Nothing changed.
Please, does anyone have any insight into this? What else could I possibly try, or what could I be doing wrong? I really don't want to send it to repair yet again in such a short time.
Many thanks in advance.
gabeblack said:
I'm really hoping you guys can help me out here. This is an S7 I bought from a Best Buy when I visited the US in 2017, and I got the Unlocked version so I would be able to use it back in my home country. Unfortunately, this is the second time I've had trouble with it in a span of 4 months and the first time it was a hardware problem and ended up quite expensive to get fixed.
Today I was using my phone normally when I decided to use the Google instant translation to translate something on my computer screen. That caused my phone to freeze, restart, and then tell me I was using an unauthorized flash and it was going to be locked, or something like that. Even after restarting a few more times, the phone would never get past that screen. I proceeded to factory reset/cache reset and from then on the phone just got stuck in a boot loop.
I learned that the fix would be to flash the phone. After a lot of work I found the G930UUESACSI1-20190930144640 firmware (the XAA version, for Unlocked) and successfully used Odin 3.13 at the Download Mode screen to flash my phone. It then restarted, went back to the blue screen, started installing some updates, when it was 100% it restarted again. Unfortunately, the loop remained. Galaxy S7 logo first, then the Samsung logo, then it just repeats.
I have also tried turning the phone off with the Recovery screen shut down option (since I can't seem to be able to turn it off with the power button right now), wait a few minutes, then turn it back on. Nothing changed.
Please, does anyone have any insight into this? What else could I possibly try, or what could I be doing wrong? I really don't want to send it to repair yet again in such a short time.
Many thanks in advance.
Click to expand...
Click to collapse
You need to clear the cache after flashing to get out of the boot loop.
Use the download key combo to restart. As soon as the screen goes black move to Volume up+home+power.
In the recovery menu choose clear/ Wipe cache, then choose reboot.
I apologize for not updating this thread before when it was still recent. The fact is that I didn't manage to fix my phone; clearing the cache after flashing did nothing to stop the loop.
I ended up taking the phone to the people who have fixed it in the past and after more than one month, they gave up. So I got my phone back and I want to try to give it another go before I just sell it for parts.
Unfortunately, my phone has come back even worse. Now it has no Recovery Menu to speak of, at least none that I can access; after a few seconds of the blue text on the top saying that it's entering recovery mode, it then proceeds to a blue screen saying: "Security Error: This phone has been flashed with unauthorized software and is locked.". I can still access Download Mode.
I have attempted flashing a few firmwares that I believe should have worked with my SM-G930U. Odin listed the attempts as "pass" and, after restarting and going back to the Download screen, it says the binary is Official. However, after trying to restart the phone normally, it starts displaying the blue screen again, and then, after going to Download mode, the binary is reverted to "Custom".
I believe right now the order of the day is to get the recovery menu to work again so I can do all the cache cleaning that seems to be required after flashing firmware. Any ideas at all on how I should proceed? Is there something specific I should download to fix the recovery menu?
How many files are you flashing in Odin, is it just 1 file in the AP slot, or 4 files: AP, BL, etc.? Also, is your phone rooted?
Drunkpilot said:
How many files are you flashing in Odin, is it just 1 file in the AP slot, or 4 files: AP, BL, etc.? Also, is your phone rooted?
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Click to collapse
Never rooted, was using the phone legit before it froze and entered boot loop. I flashed all 4 files, multiple times.
Someone tried fixing my phone a few days after I replied to this thread and some progress seems to have been made, but now the phone cannot get past a black screen with a "SBL Error! rdx_init!" in red text, and "upload mode" in yellow text. Still cannot access Recovery Mode, but Download Mode still works.
I did a little Googling on rdx_init errors and it seems I need a firmware dump from another G930U or something like that...any ideas on how I can proceed?
Flash it with Eng Boot in all slots using patched Odin. Reboot to recovery and wipe it. Reboot system. Then root it with advanced adb root. Links for all of this are here in xda. Enjoy
STA1NL3SS said:
Flash it with Eng Boot in all slots using patched Odin. Reboot to recovery and wipe it. Reboot system. Then root it with advanced adb root. Links for all of this are here in xda. Enjoy
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Click to collapse
Sorry, I'm not an expert at this by any means, I'm not sure what files to get. So far I've found and downloaded the following:
S7_Oreo_Nougat_Adb_Advanced_Root_V10
S7_Oreo_Nougat_Adb_Advanced_Root_V12
S7_Oreo_Su_Binary_Only_ADB_Root
But I had no luck flashing any of these cause my binary is 10. Is there any more help you can provide me? I really don't know how to proceed
gabeblack said:
Sorry, I'm not an expert at this by any means, I'm not sure what files to get. So far I've found and downloaded the following:
S7_Oreo_Nougat_Adb_Advanced_Root_V10
S7_Oreo_Nougat_Adb_Advanced_Root_V12
S7_Oreo_Su_Binary_Only_ADB_Root
But I had no luck flashing any of these cause my binary is 10. Is there any more help you can provide me? I really don't know how to proceed
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Click to collapse
I thought I had one in my phone, but I don't. If you look at the thread where you downloaded the Root_V12, you will see it. It's near the end of the thread somewhere.

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