Database Users

[Q] Bootloop on stock Nexus 4

Hi threre,
Yesterday, my WhatsApp kept crashing so I decided to reboot my stock Nexus 4 (4.4.4). Now my phone is stuck in a boot loop. I have access to the recovery menus.
The first thing I tried was wiping my cache. When I open the Android system recovery There is already an error on the bottom half of the screen.:
Code:
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/log
E: Can't open cache/recovery/log
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
)
I have tried wiping the data and cache partitions but when I do that the same errors as above fill up my entire screen and it does not help anything at all.
Next thing I tried was to flash a stock image using this thread http://forum.xda-developers.com/nexus-4/general/how-to-how-to-flash-factory-image-t2010312. Since I am posting here you can probably guess that this did not work as well.
The problem is that my device is not rooted, and I can not get my bootloader to stay unlocked after a reboot. I have the bootloader drivers installed on my Windows 8.1 pc using the advanced reboot method so I have access to my phone in cmd. fastboot oem unlock does seem to work at first since the "'LOCK STATE" turns to UNLOCKED, but when I do the required reboot for flashing images it turns back to locked.
Perhaps this is a symptom of a bigger cache problem?
I am definitely not a pro at this but I have some experience with rooting phones from my Samsung Galaxy S II.
I really hope that anybody knows an answer other then try you warranty plan because then I will not have my phone for 5 days or more and I am not sure whether they really can fix this...
Lastly, here is the information displayed in my fastboot screen:
Code:
FASTBOOT MODE
PRODUCT_NAME - mako
VARIANT - mako 16 GB
HW VERSION - rev_11
BOOTLOADER VERSION - MAKOZ30d
BASEBAND VERSION - M9615A-CEFWMAZM-2.0.1701.03
CARRIER INFO - None
SERIAL NUMBER - xxx wil post this if nescesarry
SIGNING - production
SECURE BOOT - enabled
LOCK STATE - locked
Thanks in advance!

If you can't lock the bootloader that is a symptom of your emmc flash memory failure. Afraid there isn't much you can do. Are you still under warranty?
Sent from my Nexus 5 using XDA Free mobile app

I still have warranty but I'm a little worried that they will complain about the damage (unrelated to the crash) of my phone. Is there no way of repairing the flash memory?

Wrong IMEI after Flashing Firmware 4.4

After flashing Android 4.4.2. IMEI changed and network signals gone. How can i fix this problem ?

TalhaMoazSarwar said:
After flashing Android 4.4.2. IMEI changed and network signals gone. How can i fix this problem ?
Click to expand...
Click to collapse
If you have old twrp backup of any rom which is earlier(in yout mobile not other mobile only your mobile don't try backup of other mobile if the mobile is same then also not try only your mobile backup) then to goto twrp hit restore and restore efs only
Or try to reflash ypur rom using this method
Use this method
1- swithoff your galaxy grand 2
2- power on to download mode( volumedown+download+power)
3- open Odin choose tar file(stock framware)
4-(most important) unmark auto Reboot, mark F. Reset time & Nand Erase All & phone bootloader update & phone EFS clear. see attached image
5-connect your grand 2 to your pc it will be shown in odin like com?
6-start odin to flash firmware to your grand 2
7-when odin finish don't reboot just remove battery for 20 sec.
8- re-insert battery and power on in recovery mode( volume up+home+power)
9-leave it do its work till samsung logo appears on screen remove battery again.
10- re-insert battery power on to recovery mode.
11 - in recovery do factory restore twice then reboot.
You can download the firamware from samobile google it and search for girmware of your model number with country code of country
Hope this will help you
Hit thanks button if i help
And ya i am not responsible for anything happens your mobile.

I have done all steps but after booting into recovery the following error occur (in red color) and phone doing bootloop on samsung logo.
E: failed to mount /data (invalid argument)
can't mount '/data' (invalid argument)
E: failed to mount /data (invalid argument)
can't mount /data/log/recovery_log.txt
E: failed to mount /data (invalid argument)
E: can't mount /data/log/emmc_checksum_log.txt

TalhaMoazSarwar said:
I have done all steps but after booting into recovery the following error occur (in red color) and phone doing bootloop on samsung logo.
E: failed to mount /data (invalid argument)
can't mount '/data' (invalid argument)
E: failed to mount /data (invalid argument)
can't mount /data/log/recovery_log.txt
E: failed to mount /data (invalid argument)
E: can't mount /data/log/emmc_checksum_log.txt
Click to expand...
Click to collapse
Factory reset 4 to 5 time and wipe cash also
May work if not to your phone to service center

Still not working

TalhaMoazSarwar said:
Still not working
Click to expand...
Click to collapse
May this help you
https://m.youtube.com/watch?v=Pai4BH3AWq8
Or open trminal emulator and type
Su
Grand permission
echo ‘AT+EGMR=1,10,”IMEI_NUMBER”‘ >/dev/pttycmd1
And reboot
In place of imei number enter your imei number
Found backside of your mobile where battery is placed
Or box of your mobile and its bill
And again do at your own risk. I am not responsible for any liability occur or any thing happen with your mobile
As you using this method your and only responsible for it not anyone else...

This trick only work on Chinese MTK mobile..

SM-G530t FRP LOCK - Stuck at Galaxy Splash screen E: failed to mount /efs (invalid a

SM-G530t FRP LOCK - Stuck at Galaxy Splash screen
Hi All, Im really stuck here. I have ODIN installed on my phone and have tried to install every ROM and image out there and am having trouble with the FRP . I need to unlock it to install a stock rom image ... i have tried the kies method, the smart switch method and they all run fine, but my e: partition is hosed
tried OF8_full.tar.md5
result to android system recovery <3e>
lmy47x.g530tuvu1a0f8
reboot system now
apply update from adb
" from external storage
" from cache
wipe/factory reset
wipe cache partition
reboot to boot loader
power down
recovery logs
--------------------------------------------------------------------
E: failed to mount /efs (invalid argument)
e: failed to mount /efs (invalid argument)
e: failed setting up dirty target
dm-verity failed...
e: failed to mount /system
PLEASE HELP WITH THE FRP LOCK WITHOUT BUYING A BOX
this is seriously affecting my business and cutting into my playing Destiny time!!
thanks in advance Mike

j500H stuck on logo

e: table length: 170
e: verify signature ...
e: signature verfication is successful.
--wiping data ..
Formatting / data
Formatting / cache
formatting / sbfs ..
e: unknown volume for path [/ sbfs]
e: unknwn volume "/ sbfs"
on marshmellow
got this error
no support single-sku
i try to flash cm12
msg appears
this pacage is for device: j53g; this device is j5lte.
E: Error executing updater binary in zip '/ xxxxxxxxxxx
i flashed all these firmwares
J500H_DS_XXU1AOFB_OXE1AOFB_v5.1.1_Repair_Firmware
J500HXXU1BPJ3_J500HOJV1BPJ2_LYS
J500HXXU1AOG4_OXE1AOG4_J500HXXU1AOG4
some one please tell me how can i solve this

Reflash the stock rom to get the phone back on

john-ammu said:
e: table length: 170
e: verify signature ...
e: signature verfication is successful.
--wiping data ..
Formatting / data
Formatting / cache
formatting / sbfs ..
e: unknown volume for path [/ sbfs]
e: unknwn volume "/ sbfs"
on marshmellow
got this error
no support single-sku
i try to flash cm12
msg appears
this pacage is for device: j53g; this device is j5lte.
E: Error executing updater binary in zip '/ xxxxxxxxxxx
i flashed all these firmwares
J500H_DS_XXU1AOFB_OXE1AOFB_v5.1.1_Repair_Firmware
J500HXXU1BPJ3_J500HOJV1BPJ2_LYS
J500HXXU1AOG4_OXE1AOG4_J500HXXU1AOG4
some one please tell me how can i solve this
Click to expand...
Click to collapse
Connect your phone to computer. Install Samsung Smart Switch on the computer and initiate a firnware reflash trough it. It is official samsung service so it will automatically download the latest official firmware for your device and after that it will flash it no matter what you have done to your phone as long as you can boot it into Download Mode.

Flash stock lollipop sock ROM form SamMobile . After flashing clear ur cache and factory reset . Your device will boot . Ignore the error . After dirty flash stock mm ROM and enjoy

flash failed - got SAMSUNG Logo stack
s10gopal said:
Flash stock lollipop sock ROM form SamMobile . After flashing clear ur cache and factory reset . Your device will boot . Ignore the error . After dirty flash stock mm ROM and enjoy
Click to expand...
Click to collapse
Need your held as download mode doesn't work after flashing with odin failed.
Phone (SM-J500FN) stacks in SAMSUNG Logo!

J5 wont work

Hello, first of all, I hope I am writing in the correct forum, if not please move it to the correct one
So, I have a J5, j500fn, and I cant seem to be able to get it to work.
Currently I have tried:
- if I flash it with the android version that was on the phone before (6.0.1), I get error message. It says Fail! (Erase) and Complete (write) operation failed.
- if I glash it with the 5.1.1 it goes through well and all, but then when it restarts after flashing it it gets stuck on SAMSUNG logo with the animation.
I am doing all this with Odin 3.
And after flashing it with the 5.1.1 if I power it on with hard reset buttons, and select wipe data/factory rest, I get the following errors:
E:format_volume: make ext4 failed on /dv/block/bootdevice/by-name/userdata wit 1(I/O error)
E: unknown volume for path [/sbfs]
E: unknown colume "/sbfs"
E: failed to mount /data (Invalid argument)
cant mount '/data'(Invalid argument)
So, this is where I am currently stuck and with my very limited knowledge.