[Q] Question: Soft Bricked S3 (E: failed to mount /efs (Invalid argument)) - Galaxy S III Q&A, Help & Troubleshooting

Hi all,
It happened last night, after trying swapper2, my S3 stucked at boot logo.
I was using Omega v32 ROM before.
This morning I flashed stock rom using Odin and still stucked at boot logo.
Get into stock recovery, found out that error message:
E: failed to mount /efs (Invalid argument)
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Tried flashing .pit file using odin, didn't work too.
I have /efs backup on my external sd card, but the problem is I can't get my S3 to boot into ROM.
Any help is appreciate it. Thank you.

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What recovery is that?? Because on mine and everyone else's I've seen, it hasn't said "apply update from ADB" also, if that's an american dual core, then your screwed! So tell me its the international quad core??
Sent from my GT-I9300 using xda premium

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speedyjay said:
What recovery is that?? Because on mine and everyone else's I've seen, it hasn't said "apply update from ADB" also, if that's an american dual core, then your screwed! So tell me its the international quad core??
Sent from my GT-I9300 using xda premium
Click to expand...
Click to collapse
It's stock recovery, I took picture after flashing stock rom with odin. Mine is international quad core. Thank you for your response.

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Not sure if this would work, but it 'could'...
how about starting ADB and pushing the efs backup you have into the root directory?
Someone correct me if this is nonsense.
Rumble

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Now I just realized that my sdhc card is empty #duh.
Didn't realize what happened with it, all gone.

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irawanjohan said:
Now I just realized that my sdhc card is empty #duh.
Didn't realize what happened with it, all gone.
Click to expand...
Click to collapse
Have you solved the problem? did you keep any back-up on your pc?
Sent from my GT-I9300 using xda app-developers app

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kofiaa said:
Have you solved the problem? did you keep any back-up on your pc?
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
Nothing on my pc. I think i will have to go to samsung and pay for logic board replacement.

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Guys,
Just want to update, turns out samsung center will replace my S3's logic board, and I am hoping to get it by next week.

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irawanjohan said:
Guys,
Just want to update, turns out samsung center will replace my S3's logic board, and I am hoping to get it by next week.
Click to expand...
Click to collapse
Well, i'm changing my logic board because of the same problem also, but what's the cost of changing your logic board over there?
in Thailand it's around 4500-5000 THB (140-150 Bucks). <--- Is this too expensive or normal?

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madworld5671 said:
Well, i'm changing my logic board because of the same problem also, but what's the cost of changing your logic board over there?
in Thailand it's around 4500-5000 THB (140-150 Bucks). <--- Is this too expensive or normal?
Click to expand...
Click to collapse
It's about that price in here

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i've had experience like this last week when i create partition to sd card..it's wipe all data on sd card.

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zaki aziz said:
i've had experience like this last week when i create partition to sd card..it's wipe all data on sd card.
Click to expand...
Click to collapse
Do you mean external sd card?

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irawanjohan said:
Do you mean external sd card?
Click to expand...
Click to collapse
yupp..u can easily move app to sd by now.Just view today thread.