Database Users

[Q] Not able to boot

I am lost on this S5 Verizon phone repair any help would be appreciated. Below is everything I have already done. During each time I flashed the device with ODIN I have also went in and did a wipe catch and factory reset to make sure it wasn't anything getting "stuck" during the flash process.
First error message when this all started read:
“System software not authorized by Verizon Wireless has been found on your phone....”
Above this error message in red text reads: Secure Fail: Modem
I decided I would attempt to go back to stock firmware and unroot the device. I have downloaded and loaded step by step of the following software packages via odin.
ALL_VZW_G900VVRU1ANCG_G900VVZW1ANCG_964333_REV00_user_low_ship_MULTI_CERT.tar.md5
ALL_VZW_G900VVRU1ANE9_G900VVZW1ANE9_1556536_REV00_user_low_ship_MULTI_CERT.tar.md5
ALL_VZW_G900VVRU1ANHA_G900VVZW1ANHA_2525521_REV00_user_low_ship_MULTI_CERT.tar.md5
ALL_VZW_G900VVRU1ANI2_G900VVZW1ANI2_2525521_REV00_user_low_ship_MULTI_CERT.tar.md5
I have also attempted to reset the PIT with: KLTE_USA_VZW ( I tried this after the first software package did not correct the issue and did some more research)
After doing all of the above I still get the “System software not authorized by Verizon Wireless has been found on your phone.”
I attempted to use
G900VVRU1BOA8_G900VVZW1BOA8_G900VVRU1BOA8_HOME - which is 5.0 and I am downloading this from Sammobile.com as I type to try instead.
On 5.0 i get a different error instead reading:
Start Up Failed
Your device didn't start up successfully. Use the Verizon software repair assistant on a computer to repair your device.
Above this error message in red text reads: Secure Fail: Modem
I can not use kies as the device is recognized but says it is not supported.
Please note: I did purchase this device knowing the first error message thinking it would just be a simple re-flash back to stock.
My Background: I have worked in the mobile business as a Sprint tech for 2 years and now work for a private company in computer and mobile repair so a total of 3 1/2 years mobile experience. However, I have not run into an issue like this before.
Again any help is much appreciated as this one has me stumped on what to try next

Update
Update:
I have downloaded the firmware G900VVRU1BOA8_G900VVZW1BOA8_VZW from sammobile.com
When flashing with odin i get the same error " Your device didn't start up successfully......"
Also, I attempted to update from zip and I received an error "E footer is wrong" and "E signature verification failed"
Again any suggestion are appreciated.
tan0892 said:
I am lost on this S5 Verizon phone repair any help would be appreciated. Below is everything I have already done. During each time I flashed the device with ODIN I have also went in and did a wipe catch and factory reset to make sure it wasn't anything getting "stuck" during the flash process.
First error message when this all started read:
“System software not authorized by Verizon Wireless has been found on your phone....”
Above this error message in red text reads: Secure Fail: Modem
I decided I would attempt to go back to stock firmware and unroot the device. I have downloaded and loaded step by step of the following software packages via odin.
ALL_VZW_G900VVRU1ANCG_G900VVZW1ANCG_964333_REV00_user_low_ship_MULTI_CERT.tar.md5
ALL_VZW_G900VVRU1ANE9_G900VVZW1ANE9_1556536_REV00_user_low_ship_MULTI_CERT.tar.md5
ALL_VZW_G900VVRU1ANHA_G900VVZW1ANHA_2525521_REV00_user_low_ship_MULTI_CERT.tar.md5
ALL_VZW_G900VVRU1ANI2_G900VVZW1ANI2_2525521_REV00_user_low_ship_MULTI_CERT.tar.md5
I have also attempted to reset the PIT with: KLTE_USA_VZW ( I tried this after the first software package did not correct the issue and did some more research)
After doing all of the above I still get the “System software not authorized by Verizon Wireless has been found on your phone.”
I attempted to use
G900VVRU1BOA8_G900VVZW1BOA8_G900VVRU1BOA8_HOME - which is 5.0 and I am downloading this from Sammobile.com as I type to try instead.
On 5.0 i get a different error instead reading:
Start Up Failed
Your device didn't start up successfully. Use the Verizon software repair assistant on a computer to repair your device.
Above this error message in red text reads: Secure Fail: Modem
I can not use kies as the device is recognized but says it is not supported.
Please note: I did purchase this device knowing the first error message thinking it would just be a simple re-flash back to stock.
My Background: I have worked in the mobile business as a Sprint tech for 2 years and now work for a private company in computer and mobile repair so a total of 3 1/2 years mobile experience. However, I have not run into an issue like this before.
Again any help is much appreciated as this one has me stumped on what to try next
Click to expand...
Click to collapse

tan0892 said:
Update:
I have downloaded the firmware G900VVRU1BOA8_G900VVZW1BOA8_VZW from sammobile.com
When flashing with odin i get the same error " Your device didn't start up successfully......"
Also, I attempted to update from zip and I received an error "E footer is wrong" and "E signature verification failed"
Again any suggestion are appreciated.
Click to expand...
Click to collapse
Try a factory data reset and clear cache from the stock recovery. You can also try Nand Erase All and Phone EFS Clear in Odin with the tar and pit files..

clarification
I have never done a Nand Erase All and a bit hesitant to do so with out clarification.
Is the suggestion to have the full tar file.
G900VVRU1BOA8_G900VVZW1BOA8_VZW.tar in AP
KLTE_USA_VZW.pit in PIT
and have the following
Auto Reboot
F. Reset Time
Nand Erase All
Phone EFS Clear
Then click start?
Misterxtc said:
Try a factory data reset and clear cache from the stock recovery. You can also try Nand Erase All and Phone EFS Clear in Odin with the tar and pit files..
Click to expand...
Click to collapse

tan0892 said:
I have never done a Nand Erase All and a bit hesitant to do so with out clarification.
Is the suggestion to have the full tar file.
G900VVRU1BOA8_G900VVZW1BOA8_VZW.tar in AP
KLTE_USA_VZW.pit in PIT
and have the following
Auto Reboot
F. Reset Time
Nand Erase All
Phone EFS Clear
Then click start?
Click to expand...
Click to collapse
Yes that should do it for you. I forgot exactly what Nand erases but it won't hurt, I've done it many times.

Still failed with same error messages. I have tried this with ALL_VZW_G900VVRU1ANHA_G900VVZW1ANHA_2525521_REV00_user_low_ship_MULTI_CERT.tar.md5 and G900VVRU1BOA8_G900VVZW1BOA8_VZW with no luck.
Misterxtc said:
Yes that should do it for you. I forgot exactly what Nand erases but it won't hurt, I've done it many times.
Click to expand...
Click to collapse

tan0892 said:
Still failed with same error messages. I have tried this with ALL_VZW_G900VVRU1ANHA_G900VVZW1ANHA_2525521_REV00_user_low_ship_MULTI_CERT.tar.md5 and G900VVRU1BOA8_G900VVZW1BOA8_VZW with no luck.
Click to expand...
Click to collapse
I would take it to a Verizon or BestBuy store and see if they will try seeing that this isn't working for you.

Update 2
Best Buy - can not do anything with it.
Verizon- Since I am prepaid and never had this device on this line they can not help
Samsung - offered me to send in the device to be re flashed. However, it is "out of warranty" due to more then 1 year old manufacture. --- Yes it was released April 11 2014 and I explained this to the friendly fella on the other line for about 45 minutes till he got me to his supervisor. Which then told me the only person that can over ride the out of warranty statues is the repair service center. The flash would be free. However, if anything is physically wrong with the device it will not be covered. With how non of the flash seem to work I am leaning towards this being a failure with the on board storage.
If any one has any suggestions before Monday please let me know otherwise I will send the phone in to see what Samsung has to say. I will update the posting once I find out more. .

tan0892 said:
Best Buy - can not do anything with it.
Verizon- Since I am prepaid and never had this device on this line they can not help
Samsung - offered me to send in the device to be re flashed. However, it is "out of warranty" due to more then 1 year old manufacture. --- Yes it was released April 11 2014 and I explained this to the friendly fella on the other line for about 45 minutes till he got me to his supervisor. Which then told me the only person that can over ride the out of warranty statues is the repair service center. The flash would be free. However, if anything is physically wrong with the device it will not be covered. With how non of the flash seem to work I am leaning towards this being a failure with the on board storage.
If any one has any suggestions before Monday please let me know otherwise I will send the phone in to see what Samsung has to say. I will update the posting once I find out more. .
Click to expand...
Click to collapse
What they mean by physically wrong is if there is water damage or something that YOU did. If the phone crapped out and blew a capacitor then they should still cover it.
Also they would call you and ask if you wanted to go through the repair if there was damage in which case you would decline and ask them to send it back
Sent from my SM-G900V using XDA Free mobile app

harrytery said:
What they mean by physically wrong is if there is water damage or something that YOU did. If the phone crapped out and blew a capacitor then they should still cover it.
Also they would call you and ask if you wanted to go through the repair if there was damage in which case you would decline and ask them to send it back
Sent from my SM-G900V using XDA Free mobile app
Click to expand...
Click to collapse
Nope the phone is in good shape no cracks/liquid damage.
However, the system that Samsung has shows the phone out of warranty which is on my RMA ticket too and that's what I debated with their phone rep about for 45 minutes since release date was April 11 2014.

*02/12/2015//20:04:53//0001773863//Telephone//ASC*
2/12/2015 7:04 PM-Chien Tran: The unit is shipped.
*02/12/2015//18:34:06//0001773863//Telephone//ASC*
2/12/2015 5:33 PM-PBA Inspection: The unit has left the technician. SOLUTION: BER
*02/12/2015//18:34:05//0001773863//Telephone//ASC*
DEVICE ROOTED/Software not authorized has been found on device
*02/12/2015//09:14:28//0001773863//Telephone//ASC*
2/12/2015 8:13 AM-Degitu Yismaw: The unit has been received. Pack Condition: Fair Packaging (Box & Cushion)
thread from Samsung tracking
I am guessing this means it is bricked and Samsung will not help.
I should be getting the phone next week. Any other suggestions appreciated.

Hey man let's try to help each other out... I'm also in the same exact situation...
My phone keeps rebooting to the "Samsung powered by Android" logo and turns off and then repeats it again until I take out the battery.
I can't even download the stock 5.0 file from the samsung website because my internet is too slow...
Try only clicking "auto reboot" and "reset time F" and run the "G900VVRU1BOA8_G900VVZW1BOA8_VZW.tar.md5" file on AP.
Btw, do you have the unzipped file by any chance?

jkim204 said:
Hey man let's try to help each other out... I'm also in the same exact situation...
My phone keeps rebooting to the "Samsung powered by Android" logo and turns off and then repeats it again until I take out the battery.
I can't even download the stock 5.0 file from the samsung website because my internet is too slow...
Try only clicking "auto reboot" and "reset time F" and run the "G900VVRU1BOA8_G900VVZW1BOA8_VZW.tar.md5" file on AP.
Btw, do you have the unzipped file by any chance?
Click to expand...
Click to collapse
Sammobile site is slow because they want you to pay for the faster downloads.
I have downloaded 1 from sammobile.com as well overnight but didn't do anything different for my issue.
Your's sounds a bit different. If you can get one of these stock full tar files you should be good to flash in ODIN.
If that doesn't work do a reset/wipe device with Home + Vol Up + Power before and after flash sometimes helps
This thread has some good links to stock tar with everything.
http://forum.xda-developers.com/showpost.php?p=53447942

galaxy S5 sm-g900v firmware problem
hey man mine do the same , SM-G900V its a samsung from verizon, i just bought it because i thought it was a software problem,
it keeps rebooting and on the startup screen appears a padlock and it say "COSTUM"
sometimes it keeps a few minutes on, somtimes its frozen and restart,
This is crazy, right now i live in the dominican republik, and i dont know if i must send it to verizon

temd said:
hey man mine do the same , SM-G900V its a samsung from verizon, i just bought it because i thought it was a software problem,
it keeps rebooting and on the startup screen appears a padlock and it say "COSTUM"
sometimes it keeps a few minutes on, somtimes its frozen and restart,
This is crazy, right now i live in the dominican republik, and i dont know if i must send it to verizon
Click to expand...
Click to collapse
Sorry to all that had this problem and didn't find a fix but to those that still have a Verizon s5 this may help.
I had the same problem with this S5 I'm playing with and I fix it by using odin3 v3.10 to flash the kernel again.
Dropped the Kernel the AP in odin. Everything was still there after i flashed it pic's / text and app all still there.
And the COSTUM on the screen means you have unlocked the kernel and one need to be flash.
hit thanks if this help

sounds to me like you guys have the wrong bootloader and are trying to downgrade to older firmware than the bootloader will allow. Try downloading one of the latest 6.0 firmware packages and flash that. I would imagine that will solve your issue.

An error has occurred while updating the device software. PLEASE HELP

I was trying to downgrade my s7 edge from the latest monthly security patch back to an older one. I got an error after I did it and i heard it had something to do with the bootloader being new so I put all the files in the right spot in odin except i didnt do bootloader. That also failed and now im stuck at "an error has occurred while updating the device software. Use emergency recovery function in the smart switch pc software. I went into smart switch but i dont know what my S/N number.
If anyone can help me get out of this it would be greatly appreciated.

orlans21 said:
I was trying to downgrade my s7 edge from the latest monthly security patch back to an older one. I got an error after I did it and i heard it had something to do with the bootloader being new so I put all the files in the right spot in odin except i didnt do bootloader. That also failed and now im stuck at "an error has occurred while updating the device software. Use emergency recovery function in the smart switch pc software. I went into smart switch but i dont know what my S/N number.
If anyone can help me get out of this it would be greatly appreciated.
Click to expand...
Click to collapse
Try not downgrading your phone
S/N number is located at the back of your phone

Same Problem
HI,
I got same problem and i am really worried right now. If you got any solution please let me know. i almost went through the whole internet and have not got any solution.
one more thing i remember i just updated my blcp into latest one and having this problem. now i feel like helpless.
Any expert there, who can help us ?

orlans21 said:
I was trying to downgrade my s7 edge from the latest monthly security patch back to an older one. I got an error after I did it and i heard it had something to do with the bootloader being new so I put all the files in the right spot in odin except i didnt do bootloader. That also failed and now im stuck at "an error has occurred while updating the device software. Use emergency recovery function in the smart switch pc software. I went into smart switch but i dont know what my S/N number.
If anyone can help me get out of this it would be greatly appreciated.
Click to expand...
Click to collapse
Have you got any solution ?

Alison Ar said:
Have you got any solution ?
Click to expand...
Click to collapse
Ya I solved it 2 years ago lol

Brick Phone Challenge // dm-verity error... failed code : 0x02

Hello guys,
I bought a soft bricked S7 Edge with a dm-verity error because I thought I could easily fix the issue myself. The previous owner said he went to update the samsung software via android and this happened. But it doesn't seem too easy to fix. I've tried a bunch of different solutions I found on the interwebs but none have worked so far. I would appreciate some help because I don't seem to be making any progress.
EDIT: I've read that some people have reported losing their IMEI after an OTA update. Maybe that is what happened?
NOTE: I do NOT get the "failed to mount /efs" error
When I got the phone, it would boot directly into Android Recovery with a dm-verity error on the bottom. So here is what I tried:
1 . First I did the obvious, facotry reset and wipe partition. No change.
2. Downloaded the firmware with SamFirm (SM-G935F Regin ZTO) and flashed with Odin. It then booted into a screen with a hazard sign and a DRK error. Then returned to Android Recovery. Observation: When I extracted the firmware, I got a strange corrupted error. I downloaded it again, same corruption error. Is that normal? Also, I am not certain the region is ZTO, maybe this phone is from some other region. Does it matter?
3. I flashed the same firmware again. This time the phone booted up to a Samsung error that said to use SmartSwitch's Emergency recovery. I tried but it asks for a recovery code and I don't have one.
4. I tried to flash CF-autoroot but it gave an error in Odin and failed. EDIT: failed because "Blocked by FRP Lock" but I can't unlock the OEM like everyone else because I can't boot normally into android. Any workaround?
5. I downloaded firmware from a different region (UK). I got a DRK error and it booted into Android recovery. The bottom of the phone reads:
No Support SINGLE-SKU​Supported API: 3​dm-verity error...​failed code : 0x02​
6. I flashed the combination file and was able to boot into Factory Binary. I went into Settings to unlock OEM but there isn't that option in the Developer Settings!
That's where I am now. Any ideas?
Thanks!

Are you sure that it is an original 935F?

Pet1981 said:
Are you sure that it is an original 935F?
Click to expand...
Click to collapse
On the back of the phone, its has the model number written like this SM-G935F SAMSUNG YATELEY GU46 6GG UK. Is there someway for this to be wrong?

dleeII said:
On the back of the phone, its has the model number written like this SM-G935F SAMSUNG YATELEY GU46 6GG UK. Is there someway for this to be wrong?
Click to expand...
Click to collapse
Samsung Yateley is Samsung's official UK QA facility, they only receive official products direct from the factories and those sent back for repair and refurbishment. I know this because it's literally just down the road from my house and a couple of friends have worked there over the years.
However, "SAMSUNG YATELEY GU46 6GG UK" has been on literally millions of devices worldwide for years.
It's not a reliable Indication of a genuine product or in fact an indication of anything other than the fact that Samsung have a facility in Yateley.
If the device is a refurb or even a fake it's entirely possible that it only says "SM-G935F SAMSUNG YATELEY GU46 6GG UK" because that's what it's supposed to say.
I'm sorry that I can't be of any more help but, I hope I've helped by stopping you from embarking on a wild goose chase.

X1ras said:
Samsung Yateley is Samsung's official UK QA facility, they only receive official products direct from the factories and those sent back for repair and refurbishment. I know this because it's literally just down the road from my house and a couple of friends have worked there over the years.
However, "SAMSUNG YATELEY GU46 6GG UK" has been on literally millions of devices worldwide for years.
It's not a reliable Indication of a genuine product or in fact an indication of anything other than the fact that Samsung have a facility in Yateley.
If the device is a refurb or even a fake it's entirely possible that it only says "SM-G935F SAMSUNG YATELEY GU46 6GG UK" because that's what it's supposed to say.
I'm sorry that I can't be of any more help but, I hope I've helped by stopping you from embarking on a wild goose chase.
Click to expand...
Click to collapse
I flashed the combination software and in the Factory Binary, it says MODEL: SM-G935F [SS]. Is the information reliable? Is there a possibility that the phone is fake? If so, is there a way to tell for sure?
EDIT: I checked the IMEI I got from the Factory Binary at IMEI.info and it seems to be valid.

I don't know
THIS
can help you or not

Try to use z3x box i read some function of z3x box but i'm not sure if it will fix your phone. Just go to gsm-forum for more details.

I thought this error message you're getting is because you flashed something on your phone intended for another model. I got the same error when I first got my S7 Edge because I stupidly thought I had the snapdragon variant when in fact the G935F is the Exynos variant. I got exactly the same error message. Have you tried reflashing stock firmware via Odin? Have you checked the Knox trip counter to see if the phone had been tampered with prior to you buying it? I live a stone's throw away from Yateley (5 mins maximum) if you want me to pop in and enquire?
Sent from my SM-G935F using XDA-Developers Legacy app

Sorry for the delayed response. I left my phone with some technicians with a ZX3 and Octopus Box and they were unable to fix the phone. But they didn't seem very interested either so maybe they just blew me off. Not sure. I'll try to find someone else soon.
speedyjay said:
I thought this error message you're getting is because you flashed something on your phone intended for another model. I got the same error when I first got my S7 Edge because I stupidly thought I had the snapdragon variant when in fact the G935F is the Exynos variant. I got exactly the same error message. Have you tried reflashing stock firmware via Odin? Have you checked the Knox trip counter to see if the phone had been tampered with prior to you buying it? I live a stone's throw away from Yateley (5 mins maximum) if you want me to pop in and enquire?
Sent from my SM-G935F using XDA-Developers Legacy app
Click to expand...
Click to collapse
This may be the problem. I have tried flashing the stock firmware with Odin but maybe I'm flashing the snapdragon variant instead of the exynos. How can I tell the difference?
My warranty is 1 (0x0500). That means that Knox was tripped right?

mashardpro said:
I don't know
THIS
can help you or not
Click to expand...
Click to collapse
I've tried this guide and it didn't solve the issue.

I tried flashing a Snapdragon firmware and it failed. So I assume a Exynos firmware is the correct one.

dleeII said:
I tried flashing a Snapdragon firmware and it failed. So I assume a Exynos firmware is the correct one.
Click to expand...
Click to collapse
G935F is exynos yes
Have you tried OEM unlock via adb if possible?
Then flash twrp and https://build.nethunter.com/android-tools/no-verity-opt-encrypt/no-verity-opt-encrypt-5.0.zip ?
Sorry if it's not possible just brainstorming ..

misterashman said:
G935F is exynos yes
Have you tried OEM unlock via adb if possible?
Then flash twrp and https://build.nethunter.com/android-tools/no-verity-opt-encrypt/no-verity-opt-encrypt-5.0.zip ?
Sorry if it's not possible just brainstorming ..
Click to expand...
Click to collapse
No, I haven't tried that yet. How do I access the S7 via adb again? Is it in download mode or in the recovery? Samsungs don't have "fastboot" right?

I'm in the exact same situation, it's FRP locked to me but I can't get passed the DM-Verity to unlock nor root to pass DM-Verity. Hard to believe this could be bricked from a software issue.
---------- Post added at 05:14 PM ---------- Previous post was at 04:44 PM ----------
dleeII said:
No, I haven't tried that yet. How do I access the S7 via adb again? Is it in download mode or in the recovery? Samsungs don't have "fastboot" right?
Click to expand...
Click to collapse
Did you ever find a solution?

Hey, I was able to unbrick the phone. But I had to take it to a technician that used a very interesting technique to reset the phone. Apparently, someone had tried to flash another IMEI on the phone. To reset the device, he switched out one of the memories (there are 3 or 4 slots). Then when you boot up the phone, it is tricked into thinking you are booting up for the first time. At leas that is what I understood. Maybe someone more familiar with phone hardware could explain the solution better.
Rymcbc said:
I'm in the exact same situation, it's FRP locked to me but I can't get passed the DM-Verity to unlock nor root to pass DM-Verity. Hard to believe this could be bricked from a software issue.
---------- Post added at 05:14 PM ---------- Previous post was at 04:44 PM ----------
Did you ever find a solution?
Click to expand...
Click to collapse

Did you ever find a solution?

dleeII said:
Hello guys,
I bought a soft bricked S7 Edge with a dm-verity error because I thought I could easily fix the issue myself. The previous owner said he went to update the samsung software via android and this happened. But it doesn't seem too easy to fix. I've tried a bunch of different solutions I found on the interwebs but none have worked so far. I would appreciate some help because I don't seem to be making any progress.
EDIT: I've read that some people have reported losing their IMEI after an OTA update. Maybe that is what happened?
NOTE: I do NOT get the "failed to mount /efs" error
When I got the phone, it would boot directly into Android Recovery with a dm-verity error on the bottom. So here is what I tried:
1 . First I did the obvious, facotry reset and wipe partition. No change.
2. Downloaded the firmware with SamFirm (SM-G935F Regin ZTO) and flashed with Odin. It then booted into a screen with a hazard sign and a DRK error. Then returned to Android Recovery. Observation: When I extracted the firmware, I got a strange corrupted error. I downloaded it again, same corruption error. Is that normal? Also, I am not certain the region is ZTO, maybe this phone is from some other region. Does it matter?
3. I flashed the same firmware again. This time the phone booted up to a Samsung error that said to use SmartSwitch's Emergency recovery. I tried but it asks for a recovery code and I don't have one.
4. I tried to flash CF-autoroot but it gave an error in Odin and failed. EDIT: failed because "Blocked by FRP Lock" but I can't unlock the OEM like everyone else because I can't boot normally into android. Any workaround?
5. I downloaded firmware from a different region (UK). I got a DRK error and it booted into Android recovery. The bottom of the phone reads:
No Support SINGLE-SKU​Supported API: 3​dm-verity error...​failed code : 0x02​
6. I flashed the combination file and was able to boot into Factory Binary. I went into Settings to unlock OEM but there isn't that option in the Developer Settings!
That's where I am now. Any ideas?
Thanks!
Click to expand...
Click to collapse
You tried smart switch if identify the device and instal stock rom?

bricked S7 Edge with a dm-verity error
dleeII said:
Hello guys,
I bought a soft bricked S7 Edge with a dm-verity error because I thought I could easily fix the issue myself. The previous owner said he went to update the samsung software via android and this happened. But it doesn't seem too easy to fix. I've tried a bunch of different solutions I found on the interwebs but none have worked so far. I would appreciate some help because I don't seem to be making any progress.
EDIT: I've read that some people have reported losing their IMEI after an OTA update. Maybe that is what happened?
NOTE: I do NOT get the "failed to mount /efs" error
When I got the phone, it would boot directly into Android Recovery with a dm-verity error on the bottom. So here is what I tried:
1 . First I did the obvious, facotry reset and wipe partition. No change.
2. Downloaded the firmware with SamFirm (SM-G935F Regin ZTO) and flashed with Odin. It then booted into a screen with a hazard sign and a DRK error. Then returned to Android Recovery. Observation: When I extracted the firmware, I got a strange corrupted error. I downloaded it again, same corruption error. Is that normal? Also, I am not certain the region is ZTO, maybe this phone is from some other region. Does it matter?
3. I flashed the same firmware again. This time the phone booted up to a Samsung error that said to use SmartSwitch's Emergency recovery. I tried but it asks for a recovery code and I don't have one.
4. I tried to flash CF-autoroot but it gave an error in Odin and failed. EDIT: failed because "Blocked by FRP Lock" but I can't unlock the OEM like everyone else because I can't boot normally into android. Any workaround?
5. I downloaded firmware from a different region (UK). I got a DRK error and it booted into Android recovery. The bottom of the phone reads:
No Support SINGLE-SKU​Supported API: 3​dm-verity error...​failed code : 0x02​
6. I flashed the combination file and was able to boot into Factory Binary. I went into Settings to unlock OEM but there isn't that option in the Developer Settings!
That's where I am now. Any ideas?
Thanks!
Click to expand...
Click to collapse
I Also Have this problem with Samsung SM-G935F
I Solved This Problem With Small Trick
1. Flash Phone With Official Firmware
2. Flash Twrp Recovery
3. Wipe All Data Leave System
4. Reboot
Now I got My device back Alive
You Can Try May Be Its Works For You

I tried the same and my fone booted but its very unstable with crashing apps and random restarts...
With smart switch it ends into dm varity verification hash tree error or dm-varity error
Any solutions...

Please check my answer for the S8+ I believe it should be the same process.
https://forum.xda-developers.com/showpost.php?p=75342726&postcount=10
Good Luck

I'm in panic, please help. (dm-verity verification failed)

Hey, I really need help with my S8 with android 8.0. I had these random restarts on my phone and I thought I'd try factory reset. I backed up all my data using smart switch and did the factory reset and wiped all cache partition. Now I'm getting this dm-verity verification failed error. I found online how to fix it, but it says that my warranty will be voided. I've been using my phone for 6 months now and I've never rooted or installed custom ROMs. So what can I do to fix my phone asap?
So sorry for bad English.

supercore said:
Hey, I really need help with my S8 with android 8.0. I had these random restarts on my phone and I thought I'd try factory reset. I backed up all my data using smart switch and did the factory reset and wiped all cache partition. Now I'm getting this dm-verity verification failed error. I found online how to fix it, but it says that my warranty will be voided. I've been using my phone for 6 months now and I've never rooted or installed custom ROMs. So what can I do to fix my phone asap?
So sorry for bad English.
Click to expand...
Click to collapse
Best thing to do would be to repair firmware via smart switch
http://www.blogtechtips.com/2017/06/24/easily-restore-samsung-device-firmware-with-smart-switch/
If that doesn't work then you'll need to use an application called Odin to flash the firmware for your phone, if you've not used Odin before then I suggest you try the above 1st

sofir786 said:
Best thing to do would be to repair firmware via smart switch
http://www.blogtechtips.com/2017/06/24/easily-restore-samsung-device-firmware-with-smart-switch/
If that doesn't work then you'll need to use an application called Odin to flash the firmware for your phone, if you've not used Odin before then I suggest you try the above 1st
Click to expand...
Click to collapse
When I connect my phone to PC, smart switch says The connected device is not supported by smart switch

I might then get a DRK error, right? https://forum.xda-developers.com/galaxy-s8/help/dm-verity-error-drk-error-t3709032
Would warranty still fix my phone?

Fixed
Warranty fixed it. Motherboard was changed.

supercore said:
Warranty fixed it. Motherboard was changed.
Click to expand...
Click to collapse
Same with my brother's S8+, DM Verity error cannot be solved without tripping Knox/warranty.
The only way you can have ur phone be fixed is via hardware replacement.
My brother's fone was fixed by samsung repair center and got his phone working again.

Bricked Phone - Failed to mount system error & FRP lock.

Hi all 0/
I'm creating this post because well I have a bricked phone (I know, another bricked phone thread) and am asking if anybody can help or point me in the directions of help.
P
The Problem
So my phone failed to install the latest security update that was released in September; just gave me the update failed error on reboot. I ignored this for a month as it didn't bother me but it started to get progressively more buggy, random crashes then random restarts then google play services just stopped working. This point I looked into it and the internet told me to use smartswitch to apply the update (which I assumed to be the problem at the time). Smartswitch couldn't update it which through it into emergency recovery mode. Smartswitch was then blocked by FRP lock when I tried to use emergency recovery mode.
I then tried by use Odin to flash stock firmware, which FRP lock blocked. Now i'm stuck as I can't flash anything with odin or use smartswitch so am stuck with either download mode of emergency recovery page.
I have extracted and reflashed all the sys.img flash expect system which has allowed me to boot to recovery but have the error
DM verity failed
E/ failed to mount system (invalid argument)
All the fixes for dm verity failed system, frp lock etc don't work as i think i have a combination of problems
Neither have I found a post that describes this problem anywhere
Thank you very much for reading

If you can boot the phone do you know the google email and password to remove the fpr?

godkingofcanada said:
If you can boot the phone do you know the google email and password to remove the fpr?
Click to expand...
Click to collapse
Yes I do, which is the most annoying part!

Skyscripter said:
Yes I do, which is the most annoying part!
Click to expand...
Click to collapse
Don't use Odin, use the actual Samsung app smart switch and factory restore/emergency mode restore option.

godkingofcanada said:
Don't use Odin, use the actual Samsung app smart switch and factory restore/emergency mode restore option.
Click to expand...
Click to collapse
That's what I originally tired and it gets blocked by the frp lock

Skyscripter said:
That's what I originally tired and it gets blocked by the frp lock
Click to expand...
Click to collapse
The fpr lock isn't supposed to block you from installing official factory firmware. But it has to be the exact firmware. It should install and then ask for your gmail

godkingofcanada said:
The fpr lock isn't supposed to block you from installing official factory firmware. But it has to be the exact firmware. It should install and then ask for your gmail
Click to expand...
Click to collapse
That's what I thought, but when I've tried to use smart switch it blocks me, and every version of firmware I've found with odin it blocks. How can I find out which firmware my phone was on before it bricked its self? or do you think its a case of trying many?
assuming smartswitch is unable to find the firmware that i need is there any way of telling it which version to flash?

Skyscripter said:
That's what I thought, but when I've tried to use smart switch it blocks me, and every version of firmware I've found with odin it blocks. How can I find out which firmware my phone was on before it bricked its self? or do you think its a case of trying many?
assuming smartswitch is unable to find the firmware that i need is there any way of telling it which version to flash?
Click to expand...
Click to collapse
Smartswitch can't flash it because whatever crapped out changed the device ID or some info it looks to for authentication. I had that happen once. After a fw flash my phone changed from SM-G928W8 to G928F and smart switch wouldn't touch it. So what I had to do was find the exact match, you need to know what carrier your phone came from to get the model for firmware, like t mobile or Verizon, and then get that version, I think nougat or mm would work but our device shipped with mm. Odin will work but it the fw has to match the device. Then once it boots your gmail info is needed.

godkingofcanada said:
Smartswitch can't flash it because whatever crapped out changed the device ID or some info it looks to for authentication. I had that happen once. After a fw flash my phone changed from SM-G928W8 to G928F and smart switch wouldn't touch it. So what I had to do was find the exact match, you need to know what carrier your phone came from to get the model for firmware, like t mobile or Verizon, and then get that version, I think nougat or mm would work but our device shipped with mm. Odin will work but it the fw has to match the device. Then once it boots your gmail info is needed.
Click to expand...
Click to collapse
Okay I think I understand, so i need the exact firmware it was on before it crapped out, otherwise it will think i'm trying to flash new firmware an frp lock stops it right? My phone came unlocked in the UK., will i just have to try many different versions in hope one works?
Noob question, what does fw flash stand for?
Thanks so much for answering my questions : )