S7 edge 935F can't boot - Samsung Galaxy S7 Questions and Answers

Hi guys I have a serious issue with my S7 edge.
I installed a Samsung marvel theme and to keep it I used package disabler to disable theme store and theme center.
I was in a situation where I needed the phone to stay alive even with very low battery so I decided to switch to ultra power saving mode but I didn't think about re-enable theme store and center before switching to UPSM. Phone went black and white but UPSM wasn't fully functional (I had only a castrated black and white normal mode with no access to apps and a limited settings menu with no way to switch back to normal mode. At this point I choose maybe the worst path I could.... I rebooted the device and went in a sort of bootloop stuck on Samsung flashing logo. I tried to reboot to download mode and the phone enters it with no problems, I went also I to stock recovery and wiped cache and rebooted again with same results: phone passes the "Galaxy S7 edge" logo, led turns blue and pulses, Samsung logo appears, phone vibrates, led switches off and then nothing more, only Samsung logo flashing endlessly.
The only strange thing is that exiting recovery briefly appears a message in red that says e:/data unable to mount (invalid argument).
Now the real problem is: I don't mind if the phone is stuck and I have to reset it, factory reset it, send it back to Samsung, even dump into the thrash bin and buy a new one or a Note7... What I absolutely need to do is to have the photos back as those are those related to the first month of life of my first child!
Do I have to try to reinstall firmware via Odin? Go to service center? Please help

0355 said:
Hi guys I have a serious issue with my S7 edge.
I installed a Samsung marvel theme and to keep it I used package disabler to disable theme store and theme center.
I was in a situation where I needed the phone to stay alive even with very low battery so I decided to switch to ultra power saving mode but I didn't think about re-enable theme store and center before switching to UPSM. Phone went black and white but UPSM wasn't fully functional (I had only a castrated black and white normal mode with no access to apps and a limited settings menu with no way to switch back to normal mode. At this point I choose maybe the worst path I could.... I rebooted the device and went in a sort of bootloop stuck on Samsung flashing logo. I tried to reboot to download mode and the phone enters it with no problems, I went also I to stock recovery and wiped cache and rebooted again with same results: phone passes the "Galaxy S7 edge" logo, led turns blue and pulses, Samsung logo appears, phone vibrates, led switches off and then nothing more, only Samsung logo flashing endlessly.
The only strange thing is that exiting recovery briefly appears a message in red that says e:/data unable to mount (invalid argument).
Now the real problem is: I don't mind if the phone is stuck and I have to reset it, factory reset it, send it back to Samsung, even dump into the thrash bin and buy a new one or a Note7... What I absolutely need to do is to have the photos back as those are those related to the first month of life of my first child!
Do I have to try to reinstall firmware via Odin? Go to service center? Please help
Click to expand...
Click to collapse
Hi mate
Sorry to hear what is gong on.....
first you are in the wrong forum this is for S7 check here
http://forum.xda-developers.com/s7-edge
Now , question , did you root? do you have the original firmware on?
On this thread they show you how to re flash stock firmware without lost of the data ( using home_csc)
http://forum.xda-developers.com/s7-edge/how-to/official-stock-firmware-update-odin-t3335065
That maybe the easiest way to get your phone back without loosing the data...........of course there is always the risk
Read, read , read ...ask there!
Good luck

Thanks for support.
I'm running full stock. No root, nothing.
I've contacted official support as I'm platinum customer and they gave me a scheduled dedicated technician support at service center for tomorrow. Let's see what I will come up with...

0355 said:
Thanks for support.
I'm running full stock. No root, nothing.
I've contacted official support as I'm platinum customer and they gave me a scheduled dedicated technician support at service center for tomorrow. Let's see what I will come up with...
Click to expand...
Click to collapse
Best of luck !!
let us know how it goes and if possible what they do.....

Thanks! I will report here for sure.

I've been at service center but came up empty.
They said they can't do data recovery and that if I leave the device in their hands they'll erase it completely as first chioce.
I refused the repair and went back home. Tried to reinstall software (process ended successfully) in no wipe mode (with home_csc) but the phone still hangs at boot.
Entered in recovery mode, tried to mount system and selected "apply update from sdcard", received a red error message like this: "E: failed to mount /sdcard (No such file or directory) --> couldn't mount /sdcard".
I'm quite sure all the photos are already gone... last chance to revive the phone should be a factory reset (and this would erase every left data in any case).
I'm sad

Factory reset done. Everything lost. Phone revived.
Sent from my Samsung G935F with Tapatalk 6

0355 said:
Factory reset done. Everything lost. Phone revived.
Sent from my Samsung G935F with Tapatalk 6
Click to expand...
Click to collapse
Sh***** !!!
so sorry !

full stock rom via odin

Save ur photos in sd card next time or backup in computer

Thanks, I used an sdcard that but quickly filled the 16gb with 4k videos of the baby. It then switched to internal memory and that killed me... Now I activated Dropbox pictures upload and I'm safe (I hope).
Sent from my Samsung G935F with Tapatalk 6

Related

Pls help!!! Battery mod bricked my phone :( PLS!!

Hey guys
I have a Samsung Galaxy S. Last week I tried installing a battery icon and after installation, it rebooted my phone. It's now stuck giving me the message titled, "Factory Test Failed" w/ error,"no package was found that provides the factory_test action‏" I have the "Confirm" button, but everytime I click it, the same msg pops up again. This happens after the Galaxy and rogers logo loads. I tried going to recovery mode and clean up my user data and cleaned up the internal SD, but nothing seems to work.
I don't have my USB in debugging mode, so I am not sure if Odin is going to work on it. Any help? I did upgrade it to 2.2.
You may have to reflash 2.2 to get everything back to stock and/or do a factory reset within recovery if you can
You crashed your phone - try to reinstall the software.

S6 (SM-G920W8) Sent for Warranty

I have sent my S6 in for warranty if anyone would like to know anything about how my experience is with samsung let me know.
Yesterday my S6 froze and started boot loop couldn't access the stock recovery I wasn't able to power down the device so I had to let it die. I was only able to get to download mode knox wasn't tripped. After hours and hours trying to fix the phone I was able to get kies to install the stock firmware to the device after everything was done no errors the phone restarted and no matter what it still didn't boot still couldn't access recovery or power down the device. What I did notice though in download mode Odin said "System Status: Custom" But the Binery is still "Samsung Offical" it had changed after I tried to save the device with kies. I am unsure if "System Status: Custom" will effect my warranty.
if you can get it back into download mode, then look for the knox code and if it changes from 0 to 1 or says 0x10000 instead od 0x0000 or anything changes besides 0 (0x000) your phone has identified that the system was faulted by the flash and therefore your warranty is now void because the knox security system has changed from the original setting. If it says custom most likely it has detected as well that the system was flipped but because you said it still says samsung official they may let it slide. But im not sure what that means i believe is that the phone is an official samsung and that the flash was an official samsung code but it wasnt the original code on the phone. Sometimes a flash on the phone will change the imei so that could mean why the phone is now custom, More than likely though the repair person will have to flash your system anyway and if that doesnt work then your motherboard isnt being read by NAND and you probably need a replacement, i have been up solving mine and calling eveyr technincian store, repair person, and customer service since my phone did what yours did about 3am this morning. Ive got no sleep had about 3break downs and sadly i think it needs to just be professionally checked. My NAND keeps getting a write fail and nothing is passing over to my phone. i can still get into the recovery mode to perform factory resets and cache wipes but it says dm-veridity verification failed and even after multiple factory resets and cache wipes and accidentally hitting the adb button it has led me no where but a continous boot. My phone is only 12days old. Samsung will cover it because i didnt knock my warranty or show evident of any faulting with the OS. The phone had done a update to a new firmware and once that finished i did a factory reset from the phone settings and when i went back to wipe the cache the phone shut down and since then hasnt been able to go past the logo SAMSUNG GALAXY s6 screen powered by android. So as upset and dissastisfied as i am with the phone, i definately appreciate all the youtube videos, forums, repair technicians, and customer service advice i got today. I have definately learned more than i needed to know lol and downloaded about every type of odin available and both firmwares for the lollipop 5.1.1. for samsung galaxy and the original 5.02 the 5.02 got the farthest in download until it shut down because of the written fail and then again because of COM port, but the other one didnt even get past system configuration so i guess something needs to be looked at immediately. If you know anything please do respond back to this message before i send mine off thanks a bunch lovelies:good::good:
my phone is a samgun galaxy s6 with model SM-G290P (sprint), i was originally on android 5.02 i guess but i got the phone activated in stores so when it was given to me from the moment i had it i was on 5.1.1. , i also noticed that my phone goes through odin mode easily but wont connect to the computer i have installed the smart switch, uninstalled after it failed to work with kies, i have installed the mobile drive individually and it picked it up on odin but wont pick it up on smart switch. I do know that if i can locate my s/n number then i can just plug it into smart switch to do the factory flash but i cant locate the s/n number being my phone is turned off. i tried the DEC,HEX AKA IMEI, ICC ID, RS UNDER THE BARCODE, AND none of these codes seem to be a valid s/n number. if someone could assist me with that i would be TREMENDOUSLY GREATFULLLLL!!! ALSO BEFORE i could just click my power button once and the phone would come on now i have to slightly hold it a few second for it to even show the logo.i have also noticed that if i charge my phone the phone loops otherwise if i go to download and cancel and then power on the device manually then it shows the logo once and then shuts off. so hurt you guys!
---------- Post added at 02:40 AM ---------- Previous post was at 02:27 AM ----------
jfchic198 said:
if you can get it back into download mode, then look for the knox code and if it changes from 0 to 1 or says 0x10000 instead od 0x0000 or anything changes besides 0 (0x000) your phone has identified that the system was faulted by the flash and therefore your warranty is now void because the knox security system has changed from the original setting. If it says custom most likely it has detected as well that the system was flipped but because you said it still says samsung official they may let it slide. But im not sure what that means i believe is that the phone is an official samsung and that the flash was an official samsung code but it wasnt the original code on the phone. Sometimes a flash on the phone will change the imei so that could mean why the phone is now custom, More than likely though the repair person will have to flash your system anyway and if that doesnt work then your motherboard isnt being read by NAND and you probably need a replacement, i have been up solving mine and calling eveyr technincian store, repair person, and customer service since my phone did what yours did about 3am this morning. Ive got no sleep had about 3break downs and sadly i think it needs to just be professionally checked. My NAND keeps getting a write fail and nothing is passing over to my phone. i can still get into the recovery mode to perform factory resets and cache wipes but it says dm-veridity verification failed and even after multiple factory resets and cache wipes and accidentally hitting the adb button it has led me no where but a continous boot. My phone is only 12days old. Samsung will cover it because i didnt knock my warranty or show evident of any faulting with the OS. The phone had done a update to a new firmware and once that finished i did a factory reset from the phone settings and when i went back to wipe the cache the phone shut down and since then hasnt been able to go past the logo SAMSUNG GALAXY s6 screen powered by android. So as upset and dissastisfied as i am with the phone, i definately appreciate all the youtube videos, forums, repair technicians, and customer service advice i got today. I have definately learned more than i needed to know lol and downloaded about every type of odin available and both firmwares for the lollipop 5.1.1. for samsung galaxy and the original 5.02 the 5.02 got the farthest in download until it shut down because of the written fail and then again because of COM port, but the other one didnt even get past system configuration so i guess something needs to be looked at immediately. If you know anything please do respond back to this message before i send mine off thanks a bunch lovelies:good::good:
my phone is a samgun galaxy s6 with model SM-G290P (sprint), i was originally on android 5.02 i guess but i got the phone activated in stores so when it was given to me from the moment i had it i was on 5.1.1. , i also noticed that my phone goes through odin mode easily but wont connect to the computer i have installed the smart switch, uninstalled after it failed to work with kies, i have installed the mobile drive individually and it picked it up on odin but wont pick it up on smart switch. I do know that if i can locate my s/n number then i can just plug it into smart switch to do the factory flash but i cant locate the s/n number being my phone is turned off. i tried the DEC,HEX AKA IMEI, ICC ID, RS UNDER THE BARCODE, AND none of these codes seem to be a valid s/n number. if someone could assist me with that i would be TREMENDOUSLY GREATFULLLLL!!! ALSO BEFORE i could just click my power button once and the phone would come on now i have to slightly hold it a few second for it to even show the logo.i have also noticed that if i charge my phone the phone loops otherwise if i go to download and cancel and then power on the device manually then it shows the logo once and then shuts off. so hurt you guys!
Click to expand...
Click to collapse
ALSO WHEN MY PHONE IS OFF I CAN SEE THE BATTERY IS CHARGING RIGHT NOW IT IS AT 82%, sorry for the caps i was typing and reading the phone. On the recovery mode update using ADB is disabled apparently and so is the option to update using external storage the apply update from cache is deprecated too and also when i started having a problem when i hit the power button home button and the volume up it showed the little android man died now it shows he is ok and up right like normal but the dm-verity verification failed still , I AM ABLE TO SEE EVERY LOG IVE RECREATED IN RECOVERY UP UNTILT EH VERY FIRST CACEH WIPE I DID THE DAY AFTER I RECIEVED THE PHONE. IS THERE A WAY I CAN TAKE THE IMAGE OR INFO FROM THIS TO REFLASH THE PHONE MAYBE?!!?!?:highfive:
Have patience. Your S6 willbe fixed soon by Samsung.

Did System Update on Galaxy 6 - Now stuck on Samsung Logo...

Hi, I'm in a bit of a rage right now. Need my phone for work, and also afraid of loosing all the pictures and videos I've taken
So my phone has worked perfectly for months, updated several times, but today after the last update it's stuck on the boot logo, the Samsung one.
I've tried hard reset with Power+Down, it just reboots to the same logo and stays there forever. I also can't get into recovery mode with Power+Up+Home, it just gives me a yellow triangle with an exclamation mark in it for 1 second then boots back to the samsung logo. Tried Kies 3, it doesn't recognice the phone at all, tried everything in there.
The only thing I can access is the Download mode Down+Power+Home, I have no idea what to do there, I've read about Odin but that looks like some NASA-stuff way above my knowledge, isn't there just a way to get it back to previous version? Orginal, stock and all that? Don't wanna mess with roots if that can be done
I'm out of ideas, please help me, are all my data gone? Pictures, video etc? :'(
Help please
*Sorry for bad English, not my native, but I hope it got trough.
Sounds like an update gone wrong. Restoring the phone isn't so hard but saving your pictures and data is harder in most cases. You can try using Smart Switch and see if your device shows up on failed updates, maybie it can repair the installation. You can also use Smart Switch to restore the phone completely, but this DELETES everything on it. If you haven't rooted phone and have warranty, I'd return it to Samsung with strict instructions that phone broke when software update and that you want to keep your data/pictures. If the phone is rooted there are ways to extract data from the phone memory but I'd only do that as a last option.
schoolsux said:
Sounds like an update gone wrong. Restoring the phone isn't so hard but saving your pictures and data is harder in most cases. You can try using Smart Switch and see if your device shows up on failed updates, maybie it can repair the installation. You can also use Smart Switch to restore the phone completely, but this DELETES everything on it. If you haven't rooted phone and have warranty, I'd return it to Samsung with strict instructions that phone broke when software update and that you want to keep your data/pictures. If the phone is rooted there are ways to extract data from the phone memory but I'd only do that as a last option.
Click to expand...
Click to collapse
Yeah, I did the upgrade with modelname and S/N trough Smart Switch, it worked, but all data was lost including all my contact phone numbers, hade over 350 :| don't think they are synced either? :|
Anyway, glad the phone works, will never install these stupid updates again, never noticed a single improvment after them anyways

Phone doesn't turn on/stuck in bootloop

Need suggestions for this.
A few weeks ago I rooted my phone to remove some apps that I never used. I just kept using my phone as always and did nothing special except removing those apps. Today I decided to unroot my phone because I felt it would be safer in case anything should happen to it (HOW IRONIC). It's only 3 months old and I didn't want to loose my warranty. I opened the SuperUser app and clicked full unroot and clicked continue. My phone instantly returned to the home screen and then powered off. Then it turned on again, but now the message "Samsung Galaxy S7 powered by Android" keeps flashing on the screen. I went into recovery mode and tried wiping the cache first, but nothing changed. Then I wiped all my data and did a factory reset, but my phone keeps flashing and won't turn on. I'm really desperate and don't know what to do because I'm afraid I can't take it to my retailer because my phone is rooted (if it still is rooted, but I have no idea). What should I do?
Surya Kumar said:
Need suggestions for this.
A few weeks ago I rooted my phone to remove some apps that I never used. I just kept using my phone as always and did nothing special except removing those apps. Today I decided to unroot my phone because I felt it would be safer in case anything should happen to it (HOW IRONIC). It's only 3 months old and I didn't want to loose my warranty. I opened the SuperUser app and clicked full unroot and clicked continue. My phone instantly returned to the home screen and then powered off. Then it turned on again, but now the message "Samsung Galaxy S7 powered by Android" keeps flashing on the screen. I went into recovery mode and tried wiping the cache first, but nothing changed. Then I wiped all my data and did a factory reset, but my phone keeps flashing and won't turn on. I'm really desperate and don't know what to do because I'm afraid I can't take it to my retailer because my phone is rooted (if it still is rooted, but I have no idea). What should I do?
Click to expand...
Click to collapse
Hi mate
I would reflash again with odin using home csc instead of CSC so you do not loose your data and settings......
Edit : once it has been rooted the knox bit is set , there is no way back

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?
Click to expand...
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
Click to expand...
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
Click to expand...
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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