S7 - failed to mount /efs (invalid argument) after OTA update - Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri

I have an S7 (Korea model, bought on EBay a year ago) which no longer boots after the latest OTA update - it freezes on the SK Telecom splash screen after the Samsung logo.
I started out hoping to restore data, but now I am just hopeful I can get a working phone again, but it doesn't seem likely from what I have read, as it appears my EFS is corrupt, and I have FRP lock enabled which prevents me from installing TWRP or other tools.
Here are the things I have tried:
1. Used Odin to flash the latest official firmware (SKC-G930SKSU3ETJ1-20201105091200) (BL, AP, CP HOME_CSC)
2. Wiped flash from Recovery
3. Wiped data/factory reset from Recovery
4. Tried to load TWRP via Odin, but blocked by FRP
5. Tried to use adb sideload twrp... from a PC but also blocked by FRP
I can get into recovery, but get the E:failed to mount /efs (invalid argument) error
I can get into download mode with:
PRODUCT NAME: SM-G930S
CURRENT BINARY: Samsung Official
SYSTEM STATUS: Custom
FRP LOCK: ON
Secure Download: Enabled
WARRANTY VOID: 1 (0x0500)
AP SWREV: B:3 K:2 S:2
I didn't root this phone myself, but believe it was done by the eBay seller I got it from. The recovery screen appears to be original, so I'm not sure why I get a SYSTEM STATUS: Custom on the download screen, as I have original Samsung firmware.
Android Recovery
samsung/herolteskt/herolteskt
8.0.0/R16NW/G930SKSU3ETJ1
user/release-keys
Use volume up/down and power.
Reboot system now
Reboot to bootloader
Apply update from ADB
Apply update from SD card
Wipe data/factory reset
Wipe cache partition
Mount /system
View recovery logs
Run graphics test
Power off
#fail to open recovery_cause(No such file or directory)#
#Reboot Recovery Cause is [UNKNOWN]#
No Support SINGLE-SKU
File Based OTA
E:failed to mount /efs (Invalid argument)
Supported API: 3
E:failed to mount /efs (Invalid argument)
E:failed to mount /efs (Invalid argument)
E:failed to mount /efs (Invalid argument)
dm-verity verification failed...
Is there a way out of this, or do I have a bricked phone?

Looks like it's bricked, so I guess I'll offer it for parts on eBay. Got her a new A11, not as nice as the S7 in some ways, but at least it's covered with a 2 year protection plan...

Related

[Q] Failed 4.1.1 flash; please help!

Hi all--apparently I "softbricked" (or "soft bricked") my unlocked at&t s3 (SGH-I747) that I rooted since, after I factory reset and cache wiped my 4.1.1, I get passes on Odin whenever I try to install 4.1.1 again, which is all I wanted to do so I could try to upgrade to 4.3, but I never got that far. I just can't get 4.1.1 working again after a factory reset cache wipe.
What happens, now, is that my phone just can't get past the pulsing blue samsung logo after rebooting into any new 4.1.1 firmware I load with Odin (and I tried a few options--both stock SGH-I747 4.1.1 and the one here), or root66, but my phone just gets stuck on the pulsing blue samsung logo and stops there every time. Kies can't connect to my phone any longer, either, and it won't recognize my phone for a firmware reset, and my computer will no longer recognize my phone nor successfully install drivers for it when it's trying to boot (when I connect my phone in recovery or download mode, however, my computer will install a driver to let the computer see the phone, but I can't actually do anything with the phone after that--and Kies doesn't connect after the computer installs these drivers, either).
So, in sum: I can successfully flash 4.1.1 stock/alternatives with Odin ("pass!") but that doesn't get me past the pulsing blue samsung icon. I think I've tried to flash a new boot partition during this process, but I'm not sure. Any advice would be much appreciated, since I've been working on trying to fix my phone for a day and a half now without any luck
Slight update: I installed CWM Recovery (PhilZ Touch) and wiped again but after loading the 4.1.1 stock/alternative (above link) my phone--still--won't get past the pulsing blue samsung logo still.
Additional info.: when I boot in recovery mode after flashing the above root66 rom, I get the following errors:
E:failed to mount /data (Invalid argument)
can't mount '/data' (Invalid argument)
# MANUAL MODE #
-- Applying Multi-CSC...
Applied the CSC-code : ATT
Successfully applied multi-CSC.
E:failed to mount /data (Invalid argument)
can't mount '/data'(Invalid argument)
E:failed to mount /data (Invalid argument)
Also, I just noticed when I try to factory reset again it says this:
Formatting /data...
E:format_volume: make_extf4fs failed on /dev/block/mmcblk0p15
Formatting /cache...
E:format_volume: make_extf4fs failed on /dev/block/mmcblk0p17
Data wipe complete.
E:failed to mount /cache (Invalid argument)
E:Can't mount /cache/recovery/log
E:Can't open /cache/recovery/log
E:failed to mount /cache (Invalid argument)
E:Can't mount /cache/recovery/last_log
etc.
Thanks for taking the time to read this. I appreciate it very much. I honestly can't do anything until I get help here.
Pfhyde said:
Hi all--apparently I "softbricked" (or "soft bricked") my unlocked at&t s3 (SGH-I747) that I rooted myself, later, since I get passes on Odin whenever I try to install new firmwares, so I don't have the same problem those trying to roll back to 4.1.1 after failing to get 4.3 going, since in my case, I just can't get 4.1.1 working again after a factory reset cache wipe. I wanted to put a stock 4.1.1 on so I could try to update to 4.3, but I never got far enough to even try that.
What happens, now, is that my phone just can't get past the pulsing blue samsung logo after rebooting into any new 4.1.1 firmware I load with Odin (and I tried a few options--both stock SGH-I747 4.1.1 and the one here), or root66, but my phone just gets stuck on the pulsing blue samsung logo and stops there every time. Kies can't connect to my phone any longer, either, and it won't recognize my phone for a firmware reset, and my computer will no longer recognize my phone nor successfully install drivers for it when it's trying to boot (when I connect my phone in recovery or download mode, however, my computer will install a driver to let the computer see the phone, but I can't actually do anything with the phone after that--and Kies doesn't connect after the computer installs these drivers, either).
So, in sum: I can successfully flash 4.1.1 stock/alternatives with Odin ("pass!") but that doesn't get me past the pulsing blue samsung icon. I think I've tried to flash a new boot partition during this process, but I'm not sure. Any advice would be much appreciated, since I've been working on trying to fix my phone for a day and a half now without any luck
Slight update: I installed CWM Recovery (PhilZ Touch) and wiped again but after loading the 4.1.1 stock/alternative (above link) my phone--still--won't get past the pulsing blue samsung logo still.
Additional info.: when I boot in recovery mode after flashing the above root66 rom, I get the following errors:
E:failed to mount /data (Invalid argument)
can't mount '/data' (Invalid argument)
# MANUAL MODE #
-- Applying Multi-CSC...
Applied the CSC-code : ATT
Successfully applied multi-CSC.
E:failed to mount /data (Invalid argument)
can't mount '/data'(Invalid argument)
E:failed to mount /data (Invalid argument)
Also, I just noticed when I try to factory reset again it says this:
Formatting /data...
E:format_volume: make_extf4fs failed on /dev/block/mmcblk0p15
Formatting /cache...
E:format_volume: make_extf4fs failed on /dev/block/mmcblk0p17
Data wipe complete.
E:failed to mount /cache (Invalid argument)
E:Can't mount /cache/recovery/log
E:Can't open /cache/recovery/log
E:failed to mount /cache (Invalid argument)
E:Can't mount /cache/recovery/last_log
etc.
Thanks for taking the time to read this. I appreciate it very much. I honestly can't do anything until I get help here.
Click to expand...
Click to collapse
If you're just looking to get back to stock 4.3, you can use this:
http://forum.xda-developers.com/showthread.php?t=2496425
You'll need the Heimdall suite:
http://glassechidna.com.au/heimdall/
Once the drivers and all are there, use the Flash tab in Heimdall and attach each file appropriately.
I had to do this same process recently so feel free to hit me up if you have an issue.
mstrswrd06 said:
If you're just looking to get back to stock 4.3, you can use this:
http://forum.xda-developers.com/showthread.php?t=2496425
You'll need the Heimdall suite:
http://glassechidna.com.au/heimdall/
Once the drivers and all are there, use the Flash tab in Heimdall and attach each file appropriately.
I had to do this same process recently so feel free to hit me up if you have an issue.
Click to expand...
Click to collapse
Well, I haven't ever had 4.3 on my phone, so there's nothing to 'get back' to. I was wanting to upgrade to 4.3, but then my factory reset/cache wipe made my phone unbootable after installing 4.1.1 firmware roms. If you think I should just try to install 4.3 in the state my phone's in now, then okay--but that seems to possibly introduce other problems, from what I've been reading elsewhere.
Did you get the stock 4.1.1 firmware from sammobile.com?
audit13 said:
Did you get the stock 4.1.1 firmware from sammobile.com?
Click to expand...
Click to collapse
Yes, as it turns out I did that already--I recognized the site immediately. I downloaded the default at&t rom again and will try flashing it (again) in the morning, but I doubt anything new will happen.
Try flashing 4.1.1 again in Odin, uncheck everything except F. Reset. When you see reset in the status windows, remove the USB cable, remove, the battery, replace the battery, go into recovery, perform a full wipe, then reboot. Do a full wipe before you first boot the newly-installed OS may fix the issue.
audit13 said:
Try flashing 4.1.1 again in Odin, uncheck everything except F. Reset. When you see reset in the status windows, remove the USB cable, remove, the battery, replace the battery, go into recovery, perform a full wipe, then reboot. Do a full wipe before you first boot the newly-installed OS may fix the issue.
Click to expand...
Click to collapse
First, when I go into recovery after flashing 4.1.1 default for at&t (though my phone is unlocked and was rooted--don't know if the root is still there after all that's happened) it says right away
E:failed to mount /data (Invalid argument)
can't mount '/data'(Invalid argument)
#Manual MODE#
--Appling Multi-SCSC...
Applied the CSC-code:ATT
Successfully applied multi-CSC.
E:failed to mount /data (Invalid argument)
can't mount '/data'(Invalid argument)
E: etc.
Then, when I try to wipe it gives me an error:
-- Wiping data...
Formatting /data...
E:format_volume: make_extf4fs failed on /dev/block/mmcblk0p15
Formatting /cache...
Data wipe complete.
Then rebooting freezes on pulsing blue samsung logo--again
Did you flash an updated bootlaoder? Boot into download mode and let us know what it says on the screen.
audit13 said:
Did you flash an updated bootlaoder? Boot into download mode and let us know what it says on the screen.
Click to expand...
Click to collapse
It says
ODIN MODE
PRODUCT NAME: SGH-I747
CUSTOM BINARY DOWNLOAD: YES (2 counts)
CURRENT BINARY: Samsung Official
SYSTEM STATUS: Custom
QUALCOMM SECUREBOOT: ENABLE
Sorry for my belated responses, but I work late on the weekends in NZ.
audit13 said:
Did you flash an updated bootlaoder? Boot into download mode and let us know what it says on the screen.
Click to expand...
Click to collapse
Strange--I just booted up in recovery mode and wiped again; this time I got no errors, so I rebooted and--it works now in 4.1.1. Why it never wiped altogether before, when I didn't do anything different, is confusing; but there you have it. Now I'll venture into trying to get 4.2 or something.
Thanks all for your patience and help, even though in the end it worked on a fluke.
Glad you got your phone working. You do not have the 4.3 bootloader and, if I were you, I would not install the ATT 4.3 OTA update. This will install the 4.3 bootloader which makes it more difficult to get back to stock.
Pfhyde said:
Strange--I just booted up in recovery mode and wiped again; this time I got no errors, so I rebooted and--it works now in 4.1.1. Why it never wiped altogether before, when I didn't do anything different, is confusing; but there you have it. Now I'll venture into trying to get 4.2 or something.
Thanks all for your patience and help, even though in the end it worked on a fluke.
Click to expand...
Click to collapse
Some people have no problems at all, but CWM has a history of not wiping properly. That's why I don't using it anymore. There always came a point when it just would not wipe properly.

Flash Ascend Mate due to mount error

Hi there !
I have an Ascend Mate(M1-U06) here which stopps booting, first it shows the Huawei logo, then a white android logo - thats all.
When i enter recovery mode it works, the phone shows me this line:
""""
E:failed to mount /cache (Invalid argument)
E:failed to mount /cache (Invalid argument)
ensure_path_mounted Failed
E:failed to mount /cache (Invalid argument)
""""
Flashing or wiping in this menu fails.
Meanwhile I'm familiar with adb/fastboot.
Drivers are installed(Win10), phone is recognised, bootloader is unlocked.
I tried flashing several images, I tried flashing TWRP, everything worked well but nothing changed.
After flashing TWRP 2.6.3.3 I enter recovery mode and there is still stock recovery mode(3e).
What am I doing wrong, did i forget something ?
Can i use every TWRP Version for the mate ?
Tried to flash stock rom without success.
any ideas
thanks in advance
VirtuAl

SCH-I435L will not boot after attempting to install custom recovery

I did a stupid and followed instructions from a place other than xda to install TWRP. The guide claimed this works on any Galaxy S4 Mini, but apparently not my model. After installing TWRP my phone won't boot, it just hangs on the Samsung logo.
I can still boot into recovery and download modes. When in recovery I tried doing a factory reset and wipe cache, but it still won't go past the Samsung logo upon rebooting.
This is what I see when booting into recovery mode-
Android system recovery <3e>
KOT49H.I435LWWUBOH1
<standard recovery options here>
E:failed to mount /system (Invalid argument)
# MANUAL MODE #
-- Applying Multi-CSC...
E:failed to mount /system (Invalid argument) can't mount '/system'(Invalid argument)
E:failed to mount /system (Invalid argument)
Click to expand...
Click to collapse
This is what I see when booting into download mode-
ODIN MODE
PRODUCT NAME: SCH-I435L
CURRENT BINARY: Samsung Official
SYSTEM STATUS: Official
KNOX KERNEL LOCK: 0x0
KNOX WARRANTY VOID: 0x0
CSB-CONFIG-LSB: 0x30
BOOTLADER AP SWREV: 2
WRITE PROTECTION: Enable
Click to expand...
Click to collapse
I've checked sammobile and the usual suspects, but can't find any firmware specific to the SCH-I435L to flash. The SCH-I435 stock firmware versions I've tried were a mismatch so flashing failed. Kies was no help either.
Anyone have suggestions as to what I could try next, please?
Nevermind, I'm just going to toss the thing. I have to move in a week and I don't need to bring broken devices along for the ride.

Galaxy Tab S myriad of problems

So, I've got a Galaxy Tab S 10" (SM-T800X), its the retail demo version and I've been trying to remove the retail demo firmware, I can't factory reset the device because the option is greyed out. So far I've had no luck, I've tried using Odin to install a stock ROM but that doesn't do anything. I've tried going through recovery mode to wipe the device and it says that MDM doesn't allow factory reset. Tried running Odin a few times in case it just wasn't working the first time. I've now encountered a new problem where its stuck on the Samsung logo when I try to turn it on, even after running it through Odin, and whenever I boot it into recovery mode I get the message
E:failed to mount /data (Invalid argument)
can't mount '/data' (Invalid argument)
E:failed to mount /data (Invalid argument)
E:Can't mount /data/log/recovery_lot.txt
E:failed to mount /data (Invalid argument)
E:Can't mount /data/log/emmc_checksum_log.txt
I'm at a loss as to what I should do here, I don't use android and have never rooted a device so I've just been reading what I've found on the internet to attempt to solve it.
Anyone got any ideas what I should do now?
crotmate said:
So, I've got a Galaxy Tab S 10" (SM-T800X), its the retail demo version and I've been trying to remove the retail demo firmware, I can't factory reset the device because the option is greyed out. So far I've had no luck, I've tried using Odin to install a stock ROM but that doesn't do anything. I've tried going through recovery mode to wipe the device and it says that MDM doesn't allow factory reset. Tried running Odin a few times in case it just wasn't working the first time. I've now encountered a new problem where its stuck on the Samsung logo when I try to turn it on, even after running it through Odin, and whenever I boot it into recovery mode I get the message
E:failed to mount /data (Invalid argument)
can't mount '/data' (Invalid argument)
E:failed to mount /data (Invalid argument)
E:Can't mount /data/log/recovery_lot.txt
E:failed to mount /data (Invalid argument)
E:Can't mount /data/log/emmc_checksum_log.txt
I'm at a loss as to what I should do here, I don't use android and have never rooted a device so I've just been reading what I've found on the internet to attempt to solve it.
Anyone got any ideas what I should do now?
Click to expand...
Click to collapse
You need to install TWRP. Factory reset within TWRP, reboot to Download mode then install the stock firmware with odin.

Update to TRWP 3.4.0-0 failed - factory reset?

TWRP won't start after updating from 3.3.. to 3.4.0-0 using fastboot. Output includes "Failed to mount '/data'" - see following post.
I guess because I accidentally ran fastboot unlock although it was already unlocked. (The TWRP website fastboot update procedure starts right back with installing the tools and I jumped in at the wrong place)
Tried installing previous TWRP version but no dice.
Any ideas?
I did a TWRP backup before all this. Not exactly sure where it's located but would like to recover it if possible. Will a factory reset likely overwrite it?
Lenovo P2 LineageOS 17.1 Kuntao
Output when booting to recovery:
Code:
Could not mount /data and unable to find crypto footer.
Failed to mount '/data' (Invalid argument)
Unable to recreate /data/media folder.
Updating partition details...
Unable to mount storage
Failed to mount '/data' (Invalid argument)
fs_mgr_mount_all
Full SELimux support is present.
Unable to mount /data/media/TWRP/.twrps
Running recovery commands
Failed to mount '/data' (Invalid argument)
Formatting cache using mke2fs...
Done.
Done processing script file
Renamed stock recovery file in /system to prevent the stock ROM from replacing TWRP.

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