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[Q] s3 stuck at logo, failed to mount efs

OP okz19

28th February 2014, 06:41 PM   |  #1  
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hi all,

I have friends s3 that wont boot up, I had an s3 myself flashed it a million times fixed various issues and it always worked in the long run. im a little stuck with this one though

she says she has never flased or upgraded the phone with a computer , only ever done OTA, so the myth of efs disappearing after flashing is baffling me. she has said she was using the phone the battery died and every since it wont boot past the Samsung logo. I put the phone into recovery mode, it cand up but in red writing read " failed to mount efs (invalid argument) I did a standard clear cache using recovery rebooted still stuck, I then did a factory reset, this didn't help either , I then proceded to flash the lastest uk 02 stock rom with odin, after it completed phone booted , still sticks at the logo.

so if anyone knows of a way (except using a hammer) to get the phone going please let me know.

I have tried using kies to do emergencey firmware recovery but have to code to do this with. I tried the update and initialisation , put in model number and serial number, kies acts as if its ok to proceed it downloads "firmware upgrade components" it gets to 100% the box disappears and kies remains there greyed out and does nothing.

I have a windows 8 computer, ( crap when it comes to compatability ! ) I have tried the same senarios on both windows 7 and xp.

also I have looked around first but theres lot of mixed up information, also has anyone heard of the ics method ? where you flash stock ics and it apparently fixes the efs issue, I havnt tried this yet, as there is a massive warning saying t can cause SDS if the emc isn't the right emmc chip or something like that !
28th February 2014, 07:10 PM   |  #2  
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Restore backed up EFS folder is the answer as always .



STICKYS FAQS and GUIDES
http://forum.xda-developers.com/show....php?t=2344125


UNDERSTAND FIRST
http://forum.xda-developers.com/show....php?t=2362743

Network IMEI EFS
http://forum.xda-developers.com/show....php?t=2393289

Downgrade and network problems .

http://forum.xda-developers.com/show....php?t=2531221
28th February 2014, 08:58 PM   |  #3  
OP Member
Thanks Meter: 3
 
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I don't have any efs backed up, is there a way to proceed without backed up efs ? the phone is not mine the my friend has never backed anything up in her life, so I know she hasn't backed up any efs

Quote:
Originally Posted by JJEgan

Restore backed up EFS folder is the answer as always .



STICKYS FAQS and GUIDES
http://forum.xda-developers.com/show....php?t=2344125


UNDERSTAND FIRST
http://forum.xda-developers.com/show....php?t=2362743

Network IMEI EFS
http://forum.xda-developers.com/show....php?t=2393289

Downgrade and network problems .

http://forum.xda-developers.com/show....php?t=2531221

28th February 2014, 11:28 PM   |  #4  
boomboomer's Avatar
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Most probably efs corruption caused by the unplanned shutdown, without an efs backup you are unlikely to be able to fix it yourself. Flashing ICS will not fix anything.

You can backup the efs partition, format it and flash a generic blank, which should get the phone booting again but you'll then need to pay for a repair to recode your imei and serial numbers, you'll have no network connecting else.
1st March 2014, 04:09 AM   |  #5  
ahmedishaam's Avatar
Member
Thanks Meter: 7
 
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Quote:
Originally Posted by okz19

hi all,

I have friends s3 that wont boot up, I had an s3 myself flashed it a million times fixed various issues and it always worked in the long run. im a little stuck with this one though

she says she has never flased or upgraded the phone with a computer , only ever done OTA, so the myth of efs disappearing after flashing is baffling me. she has said she was using the phone the battery died and every since it wont boot past the Samsung logo. I put the phone into recovery mode, it cand up but in red writing read " failed to mount efs (invalid argument) I did a standard clear cache using recovery rebooted still stuck, I then did a factory reset, this didn't help either , I then proceded to flash the lastest uk 02 stock rom with odin, after it completed phone booted , still sticks at the logo.

so if anyone knows of a way (except using a hammer) to get the phone going please let me know.

I have tried using kies to do emergencey firmware recovery but have to code to do this with. I tried the update and initialisation , put in model number and serial number, kies acts as if its ok to proceed it downloads "firmware upgrade components" it gets to 100% the box disappears and kies remains there greyed out and does nothing.

I have a windows 8 computer, ( crap when it comes to compatability ! ) I have tried the same senarios on both windows 7 and xp.

also I have looked around first but theres lot of mixed up information, also has anyone heard of the ics method ? where you flash stock ics and it apparently fixes the efs issue, I havnt tried this yet, as there is a massive warning saying t can cause SDS if the emc isn't the right emmc chip or something like that !

That can be fixed by installing patched kernel and a patched modem.. There is a excellent one from FUSION
1st March 2014, 11:35 AM   |  #6  
boomboomer's Avatar
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No patch will fix a broken efs folder, patches will only help with serial number problems.

Sent from my GT-I9300 using Tapatalk
5th June 2014, 08:17 AM   |  #7  
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I have the same problem

Stock Rom, Gt I9300

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Need help!

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