S6 failing to boot - stuck on factory reset - Galaxy S6 Q&A, Help & Troubleshooting

Hey, my phone has been playing up and generally malfunctioning lately. It seems to work fine for a day or so before freezing, and either rebooting itself or forcing me to manually reboot it using power + volume down. This seems to send it into a bootloop where it generally freezes during the Samsung animation with the pulsing squares. This sequence continues with me manually rebooting, also trying to boot to safe mode and to recovery and after various attempts, i successfully got into recovery without it freezing on the blue android.
I then decided to factory reset as a last option, having looked around on forums for solutions. However, I now do not know what to do as it seems to have frozen during the factory reset. I dont have screenshots but the script reads as follows :
dm-verity verification failed. . .
-- Wiping data. . .
Formatting /data. . .
Formatting /cache. . .
It has been on that for the past 30 minutes and so i have assumed it has frozen. I'm afraid to force another reboot in case it is accessing memory, any suggestions on what to do?
It is up to date on fully stock software, has never been rooted and i have never attempted to do so. Also only around a month old.
Any help would be appreciated, thanks

I did not try to perform a factory reset yet, but my S6 shows the same instability issues.
Random self reboots with getting stuck at the boot animation.
I furthermore cannot enter the stock recovery mode (get stuck at full cyan screen with android logo), only can access the ODIN mode atm.
Booting that device atm is a hit and miss.
(everything stock, never touched that device in the XDA way! )

Update: I had to repair my S6 as instability increased even more.
Samsung licensed repair shop exchanged the mainboard of my S6.
All is fine again (except wireless charging, but I guess they broke it while repairing)

Related

[Solved] try this if you're stuck at the boot loading screen

While I was playing with my TF700 the other day I accidentally put it upside down resulting in pressing (& holding) the power bottom & volume down .. the device restarted into "Safe Mode"
I tried to get rid of it, but apparently I did something stupid which resulting in boot logo loop (the device is stuck at the second ASUS screen and refuses to boot)
* Note my device is Unlocked & I'm running the latest CleanRom version and I am kinda' experienced user :silly:
Anyway I googled this and I tried the following steps with NO success:
- Cold boot
- Wiping caches
- I also tried to re-flash a rom
which left me only with formatting & wiping data, BUT I tried this thing and it actually worked!
From TWRP I restored my last back up (which was a bit old) But whatever, It actually worked! and I have no problems whatsoever, everything seems to run as before, I also tried to reboot the device and it's still working!
I felt I should share this info with you, it might help someone :highfive:

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.

Stuck in the bootloop :(

I noticed One+ was a bit slow so I decided first to switch from power save to balanced and it was still going slow so I decided to do a reboot. After the reboot the phone got stuck at the boot animation. I can get into recovery tried a factory reset didnt help. Im wondering if i try flashing the OS if that would work. Plus what would be the best way to do so.
What ROM, Kernel are you using?
Switching from Power Save to Balanced shouldn't cause your phone to be stuck in a boot loop. Something else caused it.
Everything is stock, it was really weird I was considering maybe using adb to flash a stock img (although i have little experience doing that). I tried rebooting again to potentially start this process (this is after a good 5 or 6 reboots and a factory reset) and it started up to the welcome screen. Another side issue it seems like the factory resets for this device only wipe the apps + user data. I know if I was rooted i wouldnt expect the media to be wiped but its stock with the stock rom. I bought it off ebay and when i went to load my stuff i did a factory reset and noticed the previous owners data including call/text logs and contacts were all on the device
mrfantastic said:
Everything is stock, it was really weird I was considering maybe using adb to flash a stock img (although i have little experience doing that). I tried rebooting again to potentially start this process (this is after a good 5 or 6 reboots and a factory reset) and it started up to the welcome screen. Another side issue it seems like the factory resets for this device only wipe the apps + user data. I know if I was rooted i wouldnt expect the media to be wiped but its stock with the stock rom. I bought it off ebay and when i went to load my stuff i did a factory reset and noticed the previous owners data including call/text logs and contacts were all on the device
Click to expand...
Click to collapse
If you were to flash a stock image, it would be done in fastboot mode and not adb mode. So is your phone booting yet?
You can always adb sideload a custom ROM and flash that to get your phone to a bootable state again.
The phone booted up after a good 3 hours a factory reset and multiple reboots

Have I bricked my new S6?

I just picked up this phone yesterday. I started setting it up and found an encryption feature I thought would be useful as I deal with sensitive data. I read the instructions which said that the phone will take an hour or so to complete encryption, and I saw it restart and progress through the progress bar that appeared. It then went onto the Samsung logo and stayed there for about 2 hours. I got concerned and thought it had frozen so I restarted the phone using the 3 keys. Now it just recycles and gets to the Samsung logo and doesn't progress?!
Have you tried to factory reset or the data is not a thing that you can lose.
I had to find out how to factory reset via the boot. I've done that and my phone successfully works again. The issue was I couldn't get into the phone to reset - it was stuck on the Samsung logo, so resetting from boot was the only way (and thankfully it worked)
TheSippler said:
I had to find out how to factory reset via the boot. I've done that and my phone successfully works again. The issue was I couldn't get into the phone to reset - it was stuck on the Samsung logo, so resetting from boot was the only way (and thankfully it worked)
Click to expand...
Click to collapse
Glad you fixed it! Be careful next time!

Booting issue

Hi, I bought a used Nexus 5 and it has been causing quite some problem when booting. I flashed Cyanogenmod in it and it works fine for a few days. After that it keeps having the same problems in the following order:
- It would restart on its own, sometimes some random app will fail functioning (it's never the same app).
- Turns off on itself without restarting. Can still be turned on normally.
- From there it gets worse and start bootlooping. On CM it loops around the part where it initialises the apps. On stock its the colourful stuff that happens right after the Google logo.
- Finally it just gets stuck in boot. On CM it's stuck where it initialises apps while for stock it turns off right after the Google logo appears.
I have tried the following:
- The persist partition fix described at https://forum.xda-developers.com/google-nexus-5/general/guide-to-fix-persist-partition-t2821576
- Cleaning the power button and made sure it wasn't stuck.
- Re-flashing CM, did a checksum to make sure the files are okay
- Went back to stock, did a checksum too.
It's a used phone so I have no idea what it went through in the past. Anything I can do to fix it?
Try running the phone with a stock ROM without root. If the problem still happens, it's probably a hardware problem.
It didn't have root but I flashed a factory image (plus another round of factory reset too) and even locked the bootloader + reset the tamper flag this time. It's working fine now but the problems normally start a few hours/days later so I can't be sure at the moment.
If it does fail again which hardware is the one with the problem? The warranty's long gone so will it be easy to buy a new part and replace it myself?
The cheapest solution may be to buy a used Nexus 5 with a smashed screen and working internal components to swap out components.

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