My phone was dead due to unknown reason. It was very slow for last couple of days, so I reboot the phone into recovery and then wipe cache and dalvik. After the wipe I reboot the phone but it stuck on Samsung logo. So I tried different unsuccessful methods like, flash stock ROM, etc...
After flashing the stock ROM, rebooted the phone into recovery for factory reset, then only I noticed the error E:failed to mount /efs (Invalid argument).
ApexArizona said:
My phone was dead due to unknown reason. It was very slow for last couple of days, so I reboot the phone into recovery and then wipe cache and dalvik. After the wipe I reboot the phone but it stuck on Samsung logo. So I tried different unsuccessful methods like, flash stock ROM, etc...
After flashing the stock ROM, rebooted the phone into recovery for factory reset, then only I noticed the error E:failed to mount /efs (Invalid argument).
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I had this exact same problem all week.
There are a few steps you need to take before you can get your phone back to normal.
Step 1. DO NOT wipe the efs. Doing so will wipe your IMEI and serial number therefore never letting your phone connect to a cellular network again.
Step 2. Flash TWRP with ODIN and backup your efs using TWRP (make sure to keep this backup on your PC)
Step 3. Get the zerolte PIT file and the BTU stock ROM (Flashing my original stock rom didnt fix the issue so I used BTU and it fixed it)
Step 4. Flash the PIT file using ODIN and wait for your phone to restart. Then enter download mode again and flash the BTU stock rom
Step 5. Go back into ODIN and flash TWRP again, then make a backup of your efs again.
Step 6. Plug your device back into your PC and put your backed up efs from step 2 into the new backup and overwrite the files
Step 7. Restore the backup in TWRP and restart your phone
If your phone boots wait a little while and the carrier selection menu may show up. At this point you can leave your phone on that ROM and wait for Samsungs updates.
Common asked questions:
My phone fails at sboot.bin. You either havent flashed the PIT file or your phones bootloader has been updated to a newer bootloader. Try flashing just the modem.bin file from the tar file and seeing if that fixes your issue.
I've wiped my efs partition. In this event you need to go to a repair shop and have them write you a new efs. Once a efs is wiped your IMEI and serial number are irreversibly gone.
My phone fails at hidden.img. Try flashing again if its not working flash a new PIT file and try again.
The file name of my firmware: G925FXXU5DQA7_G925FBTU5DQA2_G925FXXU5DPL3_HOME.tar.md5
Android version: 6.0.1
CSC: BTU
Hope this helps you fix your device
i just cleared my efs with z3x tool..my phone stuck at samsung logo..anyone help me plz
Related
Hi,
My battery ran flat on my I9100 International GS2 I plugged it in and turned it on, it started to boot and then shut down. I left it to charge to 100% and now when I turn on I get bootloop around the Samsung logo. I suspect it's corrupted my bootloader and/or device partitions.
I'm running Stock+Root XXLSJ with Philz CWM 3.00 recovery (based on CWM 6.0.1.5)
When I boot into CWM - I get message: "E:Can't open /cache/recovery/last.log"
When I try to mount /cache it fails with similar message. (I also cannot mount /data. The others are OK)
When I try to wipe cache partition it fails to format it (hangs for about 10 mins saying "formatting", and then reboots my phone)
When I try to factory reset it fails to format /data (hangs for about 10 mins saying "formatting", and then reboots my phone)
So I suspect my /data and /cache are corrupt and need to be recreated.
How can I recreate these partitions?
I thought reflashing CWM might stick them back if they are missing - I tried a couple of different versions. No luck. Same errors.
I thought I'd take the opportunity to upgrade to CM10.1 RC2 - But I can't flash ROM in CWM - it fails with "Installation aborted (Status 7)"
I think I need to flash via ODIN and click the "Re-Partition" option unfortunately CM ROMS can't be flashed in with ODIN! Arrrgh!
So I think I need to flash another stock ROM via ODIN with re-partition option, then flash CM via CWM. It's a bit of a pain, do you think this should work (is that what repartition option does) or is there some other easier/better way?
Thanks
-KENT
As you've already tried dirty flashing (without wipe) your kernel (which rarely works, but worth a shot anyways), yeah, back to stock via Odin & restore backup or reflash rom/kernel & start again if you don't have recent backup.
Will this work ? It should. One bit of advice tho, I noticed you're planning to repartition.
Don't.
At least not in the first instance. Do a normal Odin flash of stock & see how that goes before you go down the repartition route. Doing that when not necessary seems to cause more bricked phones than every other cause put together.
I was trying to install a new ROM and somehow something went wrong with mounting my data drive. I did a full odin recover and still nothing, just stuck at the Samsung slash screen. Any ideas?
? Odin doesn't do recovery, are you sure you know what you've done?
Best read the basics in general, stickies. Follow the guide to return to stock, ensure you factory reset before you flash.
Need a bit more info than that. What rom did you have before, what did you flash, how did you do it, does it go into recovery and if so, does it show any error message, how do you know it's the /data partition that's not getting mounted.
If its really the /data partition, you can try to go into recovery, get adb connected and mount that partition manually. In my S3 it's on /dev/block/mmcblk0p12
I do believe odin does restore /data, if so, that's not your problem.
Doesn't do /efs though. I had a similliar problem once with the /esf partition. Had to manually format and copy it's files back. Only then my phone booted properly again.
I think you are both confused between odin and either kies or nandroid.
Odin will only write over whole partitions, it won't backup or restore anything unless you've created a flashable partition image. Make sure you know what you're doing as odin can be the fastest way to hard brick your phone.
Hello,
I'm a rather experienced Android user. Before I flashed my S3 for the first time, I made sure to back up my EFS. After about a year and a flash of the newest ArchiDroid version, I couldn't get any signal all of a sudden. It worked the days before, and I flashed nothing new or installed anything. I read online about what that might have caused, and it seems like the problem of a lost EFS partition was the problem. I restored my EFS, rebooted, and the phone won't turn on now. It is stuck on the flashing "SAMSUNG" logo on start-up. Thinking I did something, I tried to boot into Clockwork recovery, but it only shows the ClockworkMod logo for about a second, then it reboots again. What should I do?
Try flashing a full stock firmware with Odin, but sudden failure could be nand wear.
Thanks for the reply, I flashed stock firmware with Odin. No errors, but I'm still stuck at the flashing "SAMSUNG" logo.
Boot into recovery and factory reset.
Alright, got into recovery.
Got an error: "E:Failed to mount /efs". How do I restore my EFS with my efs.img now?
EDIT: Managed to get my phone back to work, However, still no signal. Mobile data and phoning does not work.
Format the efs partition then restore your backup, check the permissions then factory reset again.
Edit. If your efs backup was really old, ie. efs v1, then you might have to flash a firmware from before EMG4 to get the efs read, then update to 4.3.
Hi everyone!
My i9300 one day refuse to boot.
But boot in recovery is ok.
Download all data via adb in recovery mode.
Any try to write in inner /sdcard via adb = reboot
I`m try to flash stock 1file firmware from odin - bootloop on stage configuring apps after the logo (sometimes on first app, sometimes on 4-5).
Try flash TWRP and format /sdcard = reboot
Seems /sdcard partition is RO or damaged, but other partitions is ok.
..
Please help, what else may I try to restore phone?
It seems I fix it.
Flash 4x file firmware with PIT and "Nand Erase All" check. It finally boot, but with broken imei.
Flash proper modem & revover efs from backup.
Time to test functionality, and setup proper firmware.
Good afternoon, guys.
I'm writing here because I'm completely desperate. Yesterday I tried to update a Galaxy Ace GT-S5830M using a custom ROM. Sadly, I forgot to install the CWM first, and of course, the installation was aborted in the process. After that, each time I entered to the STOCK recovery, it said "E: failed to mount /system (invalid argument)".
I tried to install the CWM, apparently in a successful way but it didn't stay there, I mean, when I reboot the phone I end in the STOCK recovery. The thing is, after "installing" the CWM, I tried to wipe it all, but I got some issues:
1) When doing the dalvik cache wipe I got this: E: unknown volume for path [/sd-ext]
2) Trying format/system I got "Error while mounting /system!" "Skipping format" or something like that.
If I try to reset factory from the STOCK recovery I get "E:format_volume: rfs format failed on /dev/stl11"
I also tried to install a STOCK ROM through ODIN (I used 1.85, 1.87 a 3.07 without any luck) but sometimes I get stuck in "SetupConnection", in other cases the process ends failing while writing the BcmBoot.img (Complete(Write) operation failed), and the likes.
And adb doesn't recognize the cell phone at all.
Do you have any idea or suggestion? I tried it all but I just can't make the cell phone go ahead. By the way, KIES don't recognize the cell phone, don't know if that can change it all.
PS: I can "install" a ROM while playing around in the CWM. It apparently installs correctly but then, after rebooting, I get stuck in the "SAMSUNG GALAXY Ace ..." screen.
Please, help.