[Q] Device not booting - Galaxy S6 Q&A, Help & Troubleshooting

Hi, my G920F won't boot any more. I just rebooted it (like I do every once in a while) and now it sits at the Samsung logo and doesn't boot any further.
I can only enter the download mode with power, home and volume down and restart it. I can't even enter the recovery mode with volume up so that's a first time for me. Usually I would try to reflash the ROM, wipe caches etc. and then try to boot again but since I can't do all that: What are my best options?
I thought about reflashing a stock firmware, will I lose data though? Any guide which helps me to do it without losing data?
Thanks guys.

Related

[Q] Booting keeps looping, no backup :((

Hi,
please. Help me out. I just rooted my Nexus S I90023. Everything worked fine I flashed new CM9 Alpha19 ROM, but did not do any backup before. I know, I am complete asshole! It's a brand new phone so I thought I do not need any backup while I have no data. But know the bootscreen has just Google logo and lock image. i can get into recovery but I have no backups and other ROMs installed.
Is it brick? ((
go to recovery. (Power button and volume down) once in recovery press both volume up and down at the same time...then do a factory reset-wipe.
If you still need some data from the phone i would just try to wipe cache in recovery and reboot.

[Q] How to hard reset Nexus S

hi all
i am trying to do a factory reset to my nexus S but i faced some problems, the phone cant be reset to factory settings. my phone is on 2.3.4 and is rooted
i had tried the following steps
1) going to Settings>Privacy>Reset phone
after i confirm to wipe everything, the phone rebooted and it will stuck at the "Google" logo (in words) with the fastboot unlock logo at the bottom. i took off the battery to shutdown the phone (anything i press at this moment does not get any response from the phone) and start it up again. once it is started (it get pass the google word logo if i do it this way) all my application and even my themes are still there
2) shutting down the phone. press volume up + power button. choose recovery
same thing happen as above. it cant get pass the google word logo and once i restart the phone by plugging out the batt, it went back to previous state without wiping anything
i search online guide and also youtube video and all of them shows that the recovery will bring you to a android with a exclamation mark (in the triangle) but i cant get to the screen. i had left my phone there for 30 minutes but it is still stuck at the google logo.
Please help
Reflash latest clockworkmod recovery, boot into recovery and wipe data + cache + dalvik.
polobunny said:
Reflash latest clockworkmod recovery, boot into recovery and wipe data + cache + dalvik.
Click to expand...
Click to collapse
thanks for the feedback. now i am trying to flash it but i faced "adb device not found" error
ok done
managed to flash it back to an older version and everything works now
thanks a lot for your help! cheers
Make sure to update it eventually because you could run into issues when flashing stuff if your recovery isn't up to date.
No problem!

[Q] S3 stuck at Samsung logo after Odin

I'm in a serious trouble please please help
So I had cm 11 on my s3 first then I decided to go back to stock and installed 4.3 official s3 firmware using Odin.
Then my phone restarted and was stuck at the Samsung logo
I checked for a solution online and found that I should wipe cache and data and here is where the problem is
When I hold down volume up or down with home and power button it only opens download mode and I cannot wipe cache and am terribly stuck....
PLEASE HELP! Thanks in advance
I'm stuck
droid.akshay said:
I'm in a serious trouble please please help
So I had cm 11 on my s3 first then I decided to go back to stock and installed 4.3 official s3 firmware using Odin.
Then my phone restarted and was stuck at the Samsung logo
I checked for a solution online and found that I should wipe cache and data and here is where the problem is
When I hold down volume up or down with home and power button it only opens download mode and I cannot wipe cache and am terribly stuck....
PLEASE HELP! Thanks in advance
I'm stuck
Click to expand...
Click to collapse
The 3 button combination in order to start the phone in Recovery Mode (where wipe options are) should be volume UP + home + power.
Avoid the volume DOWN combination because that is for Download Mode.
Try start in Recovery Mode several times because sometimes the proper combination timing is not detected.
If really the phone can't start in Recovery Mode, you should flash the official firmware again via Odin, following the procedure with caution. An important, sometimes overrated action related to flashing via PC is that any antivirus (firewall mainly) must be turned off before the flashing procedure, in order to avoid (invisible) conflicts when transfering data through USB ports.
jorgeabe99 said:
The 3 button combination in order to start the phone in Recovery Mode (where wipe options are) should be volume UP + home + power.
Avoid the volume DOWN combination because that is for Download Mode.
Try start in Recovery Mode several times because sometimes the proper combination timing is not detected.
If really the phone can't start in Recovery Mode, you should flash the official firmware again via Odin, following the procedure with caution. An important, sometimes overrated action related to flashing via PC is that any antivirus (firewall mainly) must be turned off before the flashing procedure, in order to avoid (invisible) conflicts when transfering data through USB ports.
Click to expand...
Click to collapse
I cannot boot into recovery still with volume up the phone is still just restarting. Is there a way to flash the recovery again and I have already flashed a original firmware so should I flash that again.
Could you please show me how to wipe data and cache without starting the phone or help me with the recovery
andrectsfi
Please help someone!
droid.akshay said:
I cannot boot into recovery still with volume up the phone is still just restarting. Is there a way to flash the recovery again and I have already flashed a original firmware so should I flash that again.
Could you please show me how to wipe data and cache without starting the phone or help me with the recovery
Click to expand...
Click to collapse
First of all the boot up loop is caused because you have not wiped the cache and dalvik cache (may be).
Since the recovery is not booting means, there is some error with flashing.
What you can do right now is to flash the Original Stock Rom using Odin, the original stock OS itself contains the recovery partition.

[Q] Rooted, bad recovery, and stuck in bootloop

I scoured the forums, but have not been able to find out what I can do to solve my problem. So here it is.
I rooted my phone (to play around with some settings, what have you) and flashed TWRP recovery onto it. I got an error msg when booting up, so I decided to push an original recovery back onto the phone, because it wouldn't go to TWRP. I followed a guide (which I can't find now) to push back a stock version of recovery and it failed. My phone would boot normally just fine, but when I tried to go to recovery it would loop.
The OTA update came today, and dumbass me pressed continue (not thinking) and now I am stuck in a boot loop, and cannot get out of it.
Cannot get into recovery.
Cannot get into download mode.
Got any ideas?
Thanks
Same Problem
I have pretty much the same problem. Please help!
well without recovery/download mode working or the phone being in fastboot mode there really isn't much that can be done, you can always try to claim on warranty
boot loop
So, let me get this straight. If it failed when you tried to install the stock recovery, then you still have the TWRP recovery right?
I ran into a boot loop problem earlier when I tried upgrading TWRP. I just couldn't access my recovery so here is what I tried:
Code:
Turn your phone off.
Press volume down and power button until the LG logo comes on screen
Let go of both buttons
Hold the volume down and power buttons again until you see the "hard reset screen"
Press power once and then power again to confirm. The screen says it will reset your device but it will not as long as you have a custom recovery installed.
Your custom recovery should appear on screen.
Try the steps above and see if you can get into a recovery. Once you do maybe try resetting. Hope that helps.

S6 Stuck on Samsung S6 powered by Android screen

Hi everybody,
I guess i need some help, i got a S6 with a strange problem. It's stuck on the Samsung S6 powered by Android screen.
I tried almost everything. It's not my own phone so it's kinda hard to know exactly what caused the problem.
The story is that it was running perfectly with some custom rom, when using skype it suddenly shut down and got stuck on the logo. Now, i can go into download mode but not into recovery. So, i flashed twrp with odin with no problem, odin says completed. But when i start recovery it only says "recovery is not seandroid enforcing" and stays on that combined with the s6 boot logo. After that i tried flashing the stock rom again with odin , also going perfectly but same story , stuck on logo. I also tried 5.1.1 , 6.0.1 , bootloader, kernel, etc etc but all of them same story, stuck on logo....
Now i tried restoring the device with smart switch, and it did that perfectly with no errors, but after it got finished it restarted and u guess it...... stuck on logo!
So... i'm running out of ideas, any of u got some?
Thanx in advance
go into what recovery you have, stock or custom and wipe dalvik and cache and reboot then wait up to 15 mins
suburbadroid said:
go into what recovery you have, stock or custom and wipe dalvik and cache and reboot then wait up to 15 mins
Click to expand...
Click to collapse
If that was possible.... Recovery doesn't boot, i can only go into download mode. I can flash a recovery (or rom, bootloader , modem ,everything) without any problem with odin (no errors) but that's it. When trying to boot into recovery it just gets stuck again.
Keep trying to access twrp via key or button combo
Any update on this?
SM-G920F - NanoRom
If got the same Problem is there any Help ????
Maybe you are doing the enter into recovery button press timing wrong, etc. Its easy to mess up. Keep trying to get into recovery or give the phone to someone else to try enter recovery. The phone needs to be off first.
OR if you reboot via volume down and power which is what you have to on s6 since there is no battery to remove, you need to quickly switch t volume up power and home.
Enter in download mode flash TWRP WITH ODIN. THAN REFLASH A STOCK OR CUSTOM ROM.
---------- Post added at 02:05 PM ---------- Previous post was at 02:04 PM ----------
In other words:reflash TWRP with ODIN. It will reboot straight into TWRP after flashing
gohan040 said:
If that was possible.... Recovery doesn't boot, i can only go into download mode. I can flash a recovery (or rom, bootloader , modem ,everything) without any problem with odin (no errors) but that's it. When trying to boot into recovery it just gets stuck again.
Click to expand...
Click to collapse
When you get to the download mode don't press volume down to enter. Instead press vol up + home + power to enter recovery. This has worked for me so I'm sure it will work in your situation. Good Luck
And when you are doing the button combination to get into recovery, try not releasing any of the buttons until you see TWRP image

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