E:Failed to mount EFS ( Invalid Argument) - Samsung Galaxy A8 (2018) Questions & Answers

Hello friends, when I flash Combination file, or stock file , my phone boots and hang at start up logo, while I restart to recovery I see this error (E:Failed to mount efs, Invalid Argument)?
Can anyone help?

What have you done ? Trying to root and lost your IMEI ?
If so, then go to recovery and do all of the wipes and format Data. Once done, then just flash the exact same ROM as the one which is already installed on your phone.

TheRealKeyserSoze said:
What have you done ? Trying to root and lost your IMEI ?
If so, then go to recovery and do all of the wipes and format Data. Once done, then just flash the exact same ROM as the one which is already installed on your phone.
Click to expand...
Click to collapse
This steps does not work, I need EFS for A8 2018.

I'm having the same problem, I've tried everything. z3x, Odin , won't even let me flash from sd card. Won't load into Oreo just keeps rebooting. I can get into recovery but does nothing as well as boot loader. I did have a utility im pretty sure was made by FACTORY BINARY that was it's own little OS with a bunch of little tools. I have a sm-a530w flashed with boot loader 4 ugggg. If anyone can help find that utility that will wipe the whole thing and let me flash from scratch that would be awesome. I've tryed miracle, Uni-Android, samsung tools 29.5 and flashing with odin. Lets me flash factory FIRMWARE but still error's out on the "Failed to mount EFS" HELPPLEASE

A quick suggestion you probably tried, but i've had failure at boot in the past after returning to stock via odin if i used home_csc. So, if you haven't already tried, use just csc. No home. On home it does system.img until the end, no user_data . Not sure at all what the deal is but it's all i can suggest. Get 'er goin'!

:Failed to mount EFS
Yes I think I tried that, but at this point, I try again. Any more suggestions would be greatly appreciated. An A8 in mint shape just hurts LOL.

Related

Looking for input

Ok just noticed this can't tell if it's an m preview 2 problem or just my device. When I go into stock recovery and hit apply update from sd card I get
Supported API: 3
E: unknown volume for path [/sdcard]
-- Couldn't mount /sdcard.
Installation aborted.
it fails to mount /sdcard(check picture). Tried with TWRP and have full access to /sdcard. Tried reflashing this stock one keeps happening. Phone still works perfect tried fixing permissions any ideas?
Did you ever find a solution to this?
I got my Nexus 5X stuck in a boot loop when I try troubleshooting it, I get the same error you got (also using TWRP).
Reflashing with the stock ROM didn't help either.
Try flashing userdata.img from the stock image. Right after flashing the img file, use the buttons to boot into stock recovery, and perform a factory wipe.
audit13 said:
Try flashing userdata.img from the stock image. Right after flashing the img file, use the buttons to boot into stock recovery, and perform a factory wipe.
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Click to collapse
Thanks for the reply. I gave it another shot and I found that the basic procedure of flash the proper files was enough. What was missing was the vendor.img, which most of the guides forget to mention or associate with Nexus 9, for example.
Glad you got it sorted out:good:

Bricked S6 trying stock firmware

So somehow i managed to write over my backup and destroyed my efs folder in the process of rooting. I had no mobile connection and a message would appear saying sim card wasn't detected.
Recently my phone crashed and something with the bootloader failed because I get stuck at the Samsung logo every time. After trying to use my backup it says "no OS installed" when I try to reboot to system in TWRP.
I've tried downloading samsung s6 stock firmware on samfirm but every time I put it in Odin the program crashes. Should I try putting it on my phone and installing from TWRP? Does that work?
Is there any chance I can restore the EFS folder if I get my phone back running? IMEI and Basebank are both unknown right now..
Anyone? Pleeease? I've tried removing hidden.img from the tar file as I heard that works but no luck.
Try to Remove .md5
Jordy87pack said:
Anyone? Pleeease? I've tried removing hidden.img from the tar file as I heard that works but no luck.
Click to expand...
Click to collapse
Try to remove the .md5... let only the .tar of the rom, put your phone in Download mode, plug the cable, and press start on Odin. At the end, enter in the Recovery mode, do the wipes and reboot.
Come back to say if success or not.
i try to do wipes in twrp and it says unable to mount storage
failed to mount /data (invalid argument)

Samsung Galaxy Ace 3 LTE GT-S7275R bootloop, twrp errors

Hi everyone!
I want to ask for help.
Long story short:
Twrp 3.0.2 as custom recovery
Issue: - Takes 5 minutes to boot into recovery,
- Resets itself every time booting into it
- Wipe Data/Factory Reset not working at all
I've tried File system change, repair system file, change system file but none of these are working either. All of this ends with the same error messages:
Failed to mount '/data' (invalid argument)
Failed to mount '/cache' (invalid argument)
Unable to mount storage
Unable to wipe Dalvik, Cache, Data, System
SO I PRETTY MUCH CAN'T DO ANYTHING
Tried installing new stock Rom via Odin, full Re-Partition with correct GT-S7275R PIT file, correct BOOTLOADER file, correct FIRMWARE for my region, correct MODEM file and correct CSC file. Everything is correct and legit. Odin flashes, message is PASS, phone reboots into recovery, same recovery, same reset on recovery, restarting my phone, galaxy ace 3 logo, and goes into bootloop.
Tried with Samsung Kies, entered my phone model and S/N number, correct firmware showed up, Kies installed it. Nothing changed still!!!
Tried legit stock recovery for my model, odin flashed it, PASS, phone reboots into the same TWRP recovery... like what the hell!!
Tried flashing CWM recovery, Odin okay, PASS, reboots again into TWRP....
I did not touch my phone, I just didn't use it since 2016, the phone drained and switched off, Since then I bought a new S7, I wanted to check on my Ace 3, so yesterday I've put my Ace 3 in charger, waited a few minutes, tried to boot it, and it got stuck on boot animation... since then, I tried literally everything to get it work.. EVEN WITH COMMANDS IN THE TWRP TERMINAL. NOTHING!!!
In 2016 the phone's status was:
Custom ROM:
cm-12.1-20151001-UNOFFICIAL-loganreltexx
Gapps micro:
tk_gapps-modular-micro-5.1.1-20150927-signed
TWRP:
twrp-2.8.6.0 (now 3.0.2)
BACK THEN, I was able to flash anything, install any .zip, wipe any data, reset my phone, boot normally.
Someone, who knows what the hell is going on, and how to fix it, please tell me.
Thanks.
Remember when you flash the stock firmware via Odin you have to factory reset the phone. It won't boot if you don't reset it.
maartenw8 said:
Remember when you flash the stock firmware via Odin you have to factory reset the phone. It won't boot if you don't reset it.
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Click to collapse
Thank you for answering.
Factory reset is not working either in twrp.
tolnaicsaba said:
Thank you for answering.
Factory reset is not working either in twrp.
Click to expand...
Click to collapse
If you flash the original firmware via Odin, you should have the original recovery as well.. maybe download the firmware from a different source.
maartenw8 said:
If you flash the original firmware via Odin, you should have the original recovery as well.. maybe download the firmware from a different source.
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Click to collapse
Flashed original firmware from two sources, tried to install the third one in twrp via .zip.
Nothing changed.
tolnaicsaba said:
Flashed original firmware from two sources, tried to install the third one in twrp via .zip.
Nothing changed.
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Click to collapse
Weird.. I don't know then sorry
maartenw8 said:
Weird.. I don't know then sorry
Click to expand...
Click to collapse
Definitely weird... but no problem, thank you anyways.

Bricked honor 8 please help

Hello, today while trying to get back to stock i wierdly bircked my honor 8
I flashed the stock recovery and stock boot img
Then i flashed a rollback package and a marshmallow package which i used for this same thing before.
Now the phone didnt start for a solid 30 minutes and ive decided to reflash the rollback and marshmallow package, but after i flashed the rollback got stuck at the boot logo, not even the stock bootanimation showing up.
The phone doesnt reboot neither in any of the recoveries nor in bootloader.
Any help would be appreciated.
Stephen
Okay so after all of this i managed to reboot to bootloader and get my hands on one of my previous unlock codes. So now ive got an unlocked bootoader, but after fashing twrp the phone is stuck at the 'your device is booting now' when im trying to get in it
I thing you have flashed the wrong TWRP, check for the latest version or at least the one for your build
uh well, hello there again.
i've tried to do the dload method which failed(i used lots of versions tho none worked)
and i've tried flashing marshmallow twrp, which at the moment, well, it cannot mount anything. no partition can get mounted.
Does any of you guys have an idea of what i could try?
thanks in advance
Does it mean that you have access to TWRP ? if TWRP cannot mount a partition, go into mount section, tick system, data, boot, vendor and then reboot to TWRP again. Then try your previous operation. If it cannot mount data, go into wipe, advanced wipe, and click on format data, then restart TWRP and try again
seems like i somehow broke the partition table, cause it shows every storage as 0 mb and mounting isn't available, cant tick the option. Looks like i will have to find some service center to repair it by my own cost, by the end of the month. Though im giving it around the 25th so i got some more time till then, so maybe i find some solution to this problem.
Hey, so I managed to make the phone work again.
I have flashed boot cust recovery recovery2 and system from the italian marshmallow firmware, then I flashed that same firmware using dload method(tho it failed at 99%)
ØG_SQUAÐ said:
Hey, so I managed to make the phone work again.
I have flashed boot cust recovery recovery2 and system from the italian marshmallow firmware, then I flashed that same firmware using dload method(tho it failed at 99%)
Click to expand...
Click to collapse
You tried only once? Maybe you should now try to flash TWRP recovery and restore a backup made by TWRP. I can provide you one but for FRD-L09, not another. Another method would be to flash the rollback package and then retry flashing an EMUI 4.X ROM (dload method for both), hope you'll figure it out
I think i expressed myself wrong.
That was how i got the phone to work.
Oh lol I misunderstood because of the "it failed at 99%" and I thought the phone wasn't rebooting , no matter I'm glad you succeeded

Installing system update fail after Odin flash. Boot into recovery mode.

Hi,
My phone (S7) got into a boot loop for no apparent reason. I noticed it was a bit hot and it froze a couple of times so I rebooted it and after that it was stuck in a boot loop no matter what. I then tried "flashing" the latest firmware with Odin3 to fix it. Everything was fine in Odin but after the phone rebooted, it couldn't finish installing the patch... It showed an "error!' screen then booted into Android Recovery with these logs:
#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)
dm-verity verification failed...
E:failed to clear BCB message: failed to fin /misc partition
Click to expand...
Click to collapse
At this point I'm not sure what I can do... I would really like to avoid a factory reset as I have a lot of data on my phone I would like to keep.
Thanks!
normsrayn said:
Hi,
My phone (S7) got into a boot loop for no apparent reason. I noticed it was a bit hot and it froze a couple of times so I rebooted it and after that it was stuck in a boot loop no matter what. I then tried "flashing" the latest firmware with Odin3 to fix it. Everything was fine in Odin but after the phone rebooted, it couldn't finish installing the patch... It showed an "error!' screen then booted into Android Recovery with these logs:
At this point I'm not sure what I can do... I would really like to avoid a factory reset as I have a lot of data on my phone I would like to keep.
Thanks!
Click to expand...
Click to collapse
Hello, this problem is very common for people that root their phones if you get drk error then there are 2 methods to solve this
Method one : easy
Just flash cf autoroot with odin download the file for your phone and flash it in ap
You may get stuck or get bootloops in splash screen or red errors just wait patiently until rom boots
Method 2 : for if you want no root (ota still impossible)
Flash twrp with odin, then download the no verity file
And move it to your phone, in twrp tap on install and select the file
https://build.nethunter.com/android-tools/no-verity-opt-encrypt/
Just download the latest version of the file (6.0)
Now wait until rom boots
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Please donate and like if you think i deserved it,
If it didnt work you don't have to do it
Happy flashing and good luck
Dont forget to update me after following the steps
I'm a total newbie when it comes to phone flashing, I have a few questions. If I decide to use autoroot, is there a chance for a brick? What could go wrong? I think there's no turning back from rooting a device, right? I don't want to lose my data.
Also, I can't seem to make TWRP work because when I plug the phone to the pc it doesn't recognize it and I can't access it whatsoever to put the files in there, even after installing the drivers.
Thanks!
normsrayn said:
I'm a total newbie when it comes to phone flashing, I have a few questions. If I decide to use autoroot, is there a chance for a brick? What could go wrong? I think there's no turning back from rooting a device, right? I don't want to lose my data.
Also, I can't seem to make TWRP work because when I plug the phone to the pc it doesn't recognize it and I can't access it whatsoever to put the files in there, even after installing the drivers.
Thanks!
Click to expand...
Click to collapse
Flash the stock firmware again but from download the firmware from Samfirm application. Please use the HOME_CSC too or your device is wiped. If you need the firmware just post modelnumber or name idk and CSC code and i can post a link with the firmware for you. TWRP can't mount /data and you will need to format your phone with means you lose everything.
getting dark error in galaxy j4 smj400F after system update failing
Picklewickle said:
Hello, this problem is very common for people that root their phones if you get drk error then there are 2 methods to solve this
Method one : easy
Just flash cf autoroot with odin download the file for your phone and flash it in ap
You may get stuck or get bootloops in splash screen or red errors just wait patiently until rom boots
Method 2 : for if you want no root (ota still impossible)
Flash twrp with odin, then download the no verity file
And move it to your phone, in twrp tap on install and select the file
but i have done factory reset so how to enable oem /unlock bootloader to flash via odin
HELP
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Click to expand...
Click to collapse
Same issue
I have the same issue. I cant boot into download mode at all to even attempt to flash anything

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