Database Users

[Q] E: failed to mount data

Hello everyone,
i have a serious problem.
when i go to my recovery mod, msg appear (e :failed to mount data)
i tried to flash a lot of stock roms with odin but nothing... always the same error msg
for explain the situation :
i had the rom Bnl1 poland 5.0, i wanted to downgroad to kitkat and do a factory reset (data and cache)
after i tried to flash an 4.4.2 stock rom but i had the problem (nand write fail ) in odin pc. i download the pit file of the sm g900f in the xda threads and do the upgrade firmware with odin and since this moment, i have this error message and anything for repair this error... if you can help me
i tried too nand erase all and always this error message and i cant do an factory data reset and i cant mount data pls help me
sorry for the ba language i'm french and dont speak a lot english

Soft Brick - FAILED TO MOUNT SYSTEM - Help

Good night guys, so there's my problem:
I was on DN 0.6.1 custom ROM, TWRP 3.0.2.0 and rooted. Today, i wanted to go back to stock ROM, so, I downloaded the stock firmware throught sammobile, and tried to install it throught ODIN 3.11, but it's stopped at system.img, and remained stuck in it for a long time. so i decided to restart the phone..
Then it's showed the follow message:
firmware upgrade encountered an issue note 4. Please select recovery mode on kies and try again.
So, i tried to re-flash throught ODIN, but stucked at system.img again, after it, I downloaded KIES and tried restore it, but it's stopped at 2%.
I wasn't abble to go to recovery mode, only download mode, so, i extracted the ROM file, and flashed only the boot.img through ODIN. Now it's boot to recovery...
I wiped data/cache, but the following error showed up:
E: Failed to mount system (invalid argument).
and now i can't find a solution for it.. tried to do amost anything that i could find on the internet, but none solved my problem...
I'm wanting to flash PIT + CSC + PDA file, using the repartition option on ODIN, but i'm afraid that may brick my phone for ever...
I'm following this tutorial by now: http://forum.xda-developers.com/not...te-4-pit-files-repartiton-f-g-c-t-w8-t3282641
And i need this CSC file, because my phone is the C version, could someone give me link to download it ? couldn't find in any place.
ANd there's someone who could help me ? i'm very concerned about it because i don't have money to buy another phone at the moment...
Thanks, and yes, already looked at XDA for a answer but couldn't fine any.
THANK YOU :good:

Anyone ?

Can't flash any Firmware after installing Factory Binary

Hello guys,
I need extremely technical help as no longer know what to do.
I have a*Galaxy*S7*Edge*device, which installed the*rom*Samsung Experience 9.0.
Later I*format data to exfat and it doesn't work. After then I flashed any Nougat Firmware and lost my Imei and Baseband.
Number.
I googled until I came to this tutorial:
http://forum.xda-developers.com/s7-e...ssues-t3379516
I followed all the steps explained, I back up EFS_backup and RADIO_bakcup partitions.
Installed FACTORY BINARY Firmware for G935F, everything went well. After restarted, already had the correct IMEI number but still did not present the S / N.
After all that, i tried to*install*Stock*Firmware*via Odin, from here started the problems that could not solve.
In the first attempt Odin stucked in "System" (also used the PITfile*with the same CSC ... .i do not know if I was right using PIT?). Restarted the*device*forcibly, entered the stock Recovery, did a complete wipe and always get this message "E: falied to*mountSystem*(Invalid argument), I returned to*install*Factory Binary, then reboot in Recovery and the same message no longer appeared.
Again I try to*install*the Stock*Firmware*and Odin always stucks in*System, or NAND writing, or Partition, etc. I've tried various Stock*Firmware, with and without PIT*files, always without success.
Only Factory Binary that successfully installs. The TWRP via Odin also but when*device*restarts to enter Recovery Mode always get the message at the top of the*display:
"Recovery image signature check Fail"
"Reboot to avoid Warranty bit set."
My Question also is: What do I wrong? Or is my Phone bricked?
Device:
Galaxy S7*Edge (SM-G935F) CSC = DBT = Germany
I really need help, please.

I am facing same problem with my s7 edge g935fd. But in my case i lost imei of both sim cards & lost baseband version. I tried z3x samsung tool. But i didn't found model g935fd there.
Waiting for help

I am having the same problem with an S7 (G930V). During one of the re-flashes, I was able to install the Samsung Product Info App. The CSC product code came up as blank. Not sure if this is normal for this state. Any leads would be appreciated.

soft bricked my G928F

It's a long story but I soft bricked my G928F.
I bought it off Gumtree in the U.K and it had an frp lock on it, the seller stated that she had wiped it off so would not take it back. I had a read around and it seemed that Wondershare Dr. Fone would take off the frp lock........it didn't, rather it messed up the stock recovery. When attempting to enter recovery I get the following message and am stuck in a bootloop:
No Support SINGLE - SKU
Supported API: 3
dm-verity error
failed code: 0x02
E: failed to mount /cache (invalid argument)
While Odin will recognise the phone Smart Switch will not so I am unable to use the emergency recovery procedure.
I have read similar posts where it implies Smart Switch is the last resort but in my case that doesn't seem to be an option
Can anyone suggest a way to recover the phone or do I throw it in the bin? Any help appreciated

meohmy said:
It's a long story but I soft bricked my G928F.
I bought it off Gumtree in the U.K and it had an frp lock on it, the seller stated that she had wiped it off so would not take it back. I had a read around and it seemed that Wondershare Dr. Fone would take off the frp lock........it didn't, rather it messed up the stock recovery. When attempting to enter recovery I get the following message and am stuck in a bootloop:
No Support SINGLE - SKU
Supported API: 3
dm-verity error
failed code: 0x02
E: failed to mount /cache (invalid argument)
While Odin will recognise the phone Smart Switch will not so I am unable to use the emergency recovery procedure.
I have read similar posts where it implies Smart Switch is the last resort but in my case that doesn't seem to be an option
Can anyone suggest a way to recover the phone or do I throw it in the bin? Any help appreciated
Click to expand...
Click to collapse
Flash this using odin :
https://drive.google.com/uc?id=1tg9hJOCquyfuyROYtgpxyVKNbuidzdL8&export=download
Then, you will be able to flash latest version normaly, and also your will remove frp lock.

Thanks for that, I will flash it when I get home and report back.

Didn't work for me, the combination file gave an 'md5 error! Binary is invalid' message when loading into Odin, while renaming to .tar the flash failed.
firmware update start
Single download
sboot bin
param.bin
FAIL
Thanks for your suggestion though.

I tried installing firmware G928FXXS5CRH1 (VOD) but it failed at hidden system image, I removed that file and created a .tar which flashed successfully but the phone rebooted
to recovery initially but still showed a dm-verity error. I deleted the cache and then factory reset which appeared to also complete successfully but the phone would not boot up.
I then tried flashing the hidden sys image on its own but that failed and the phone went to the Smart Switch error recovery page, Smart Switch will not recognise the phone so will not allow access to the emergency recovery facility.
Still trying though if anyone has any idea's.

Hi there,
Im in the same boat. It had the verity error too.
BUT:
For me it worked to flash the 4-part firmware of the G928FXXS5CRH1 via Odin then.
The device boots again, without the verity error
It had Android 5.1 before, when I could flash the COMBINATION ROM and use it just fine.
(but it was a Android 7 combination ROM) :/
After flashing Android 7 debranded (G928FXXS5CRH1) in 4-parts (BL, AP, CC and CSC file) the FRP lock is still there of course,
but the phone is booting again without the verity error.
COMBINATION ROM will no longer let me flash it, though.
https://forum.xda-developers.com/s6-edge-plus/help/g-928f-verity-0x02-modem-bin-fail-t3886122
The download I did via the tool "samfirm" use chk32 and decrypt on downloading !
"SM-G928F_1_20180828170540_5avji4munw_fac"

Thanks for the reply, I fixed it myself in the end. I spent 2 days over Xmas until I eventually tried the solution that you have suggested. I eventually found a 4 part software. AS to the FRP lock, be it good luck or persistence, I managed to get rid of that as well using Samsung FRP Tool.

meohmy said:
Thanks for the reply, I fixed it myself in the end. I spent 2 days over Xmas until I eventually tried the solution that you have suggested. I eventually found a 4 part software. AS to the FRP lock, be it good luck or persistence, I managed to get rid of that as well using Samsung FRP Tool.
Click to expand...
Click to collapse
Hell Friend, Not sure If you could get this message, If yes, Kindly help me., I am facing the same issue with my Samsung Galaxy Note 5 (N920G/I) but could not find 4 parts FRP unlock firmware. Do let me know If anyone finds one.
Thanks!

Recovery does not get flashed alongside stock rom

Backstory:
Received the message "Custom binary blocked by FRP lock" when restarting my phone. I had a custom ROM installed so this was probably why, but I had flashed no-verity-opt-encrypt previously so I don't know why I randomly got this message.
Tried to flash the latest Android 8.0.0 stock firmware from sammobile, successfully flashed through Odin but when the phone boots it keeps looping into recovery, followed by "No command".
When I try to access the recovery settings by pressing power+up it comes with:
fail to open recovery_cause(No such file or directory)#
Reboot Recovery Cause is [UNKNOWN]# No Support SINGLE-SKU
Along with a bunch of lines saying failed to mount /system and dm-verity failed.
I've tried flashing many different stock ROMs but only the factory binary combination ROM is able to boot up. Therefore, I cannot turn off FRP lock. I am struggling to find out why, even though Odin successfully flashed the whole stock BL, AP, CP and CSC, the recovery cannot be opened.
Any ideas would be greatly appreciated.
Edit: Managed to fix it through a YouTube video by Mr.Lee

Try downgrading to nougat or marshmallow. That should remove FRP.
Sent from my SM-G935FD using Tapatalk

I've tried but I cannot find any marshmallow/nougat version which does not result in a SW REV CHECK FAIL error, my kernel only accepts Oreo or higher it seems.