A guide for kernel devs to recover superbricked Notes....

[vijai2011]

Is this correct? I was under the impression that the emmc error was due to incorrect voltages being passed and therefor physically frying the chips, hence the only fix is to replace the chips/mobo?

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Yeah you are right.The cwm goes rouge sometimes and passes high voltage to eMMC which causes it to burn away.

 

[chasmodo]

Just found this on the net.

http://mobiletechvideos.mybigcommerce.com/samsung-galaxy-note-jtag-brick-repair/

expensive but less then 200 for a new mobo. maybe somebody wants to try.

JTagging has been attempted before and didn't help anyone affected with the Superbrick. Not a single user got his Note back that way.

 

[prabhu1980]

I have found the command available to format the partition

Mk2efs

I am on my mobile.

Bricked users i will tell you how to format data partition after i discuss with forest1971.

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[prabhu1980]

Yeah you are right.The cwm goes rouge sometimes and passes high voltage to eMMC which causes it to burn away.

Wrong Vijai

U cannot fry ur emmc.
Looks like some copy issue or file system corruption caused by a bug in the emmc erase command.

Pls follow Garwynn in the LPY Bug Discussion threax

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[vijai2011]

Wrong Vijai

U cannot fry ur emmc.
Looks like some copy issue or file system corruption caused by a bug in the emmc erase command.

Pls follow Garwynn in the LPY Bug Discussion threax

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you are wrong too.....Did you see few post back???Ficeto said he tried every method possible to format his /data partition but he couldn't and chasmodo said Jtag also couldnt recover the device partition.So either the partition must be fried or has been damaged to the core and is not at all recoverable.Any way now we a little light in our dark room of superbricks....lets hope the best.

 

[hkgrob]

For a definitive answer, please see the updated PSA.

 

[prabhu1980]

Dear friend

How many times have you formatted ur harddisks with corrupt sectors.

If you did a fastwipe you are always in trouble

I still can tell you that its not possible to fry ur emmc.

Pls refer to garwyn post about full wipe solving the issue.

Its finally how we format our system.

Pls ask fiescto to share what he tried to format his system.

There was one user falk88 tried to run scandisk on his partition and got stopped at 89%.

3 to 4 users have come out of this factoryfs issue also. Only issue is that they have tried many things randomly and we are not able to replicate their steps. But have cured the so called emmc fry.


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[friedje]

Yeah you are right.The cwm goes rouge sometimes and passes high voltage to eMMC which causes it to burn away.

Please study some electronics knowledge before shouting nonsense.

 

[vijai2011]

Dear friend

How many times have you formatted ur harddisks with corrupt sectors.

If you did a fastwipe you are always in trouble

I still can tell you that its not possible to fry ur emmc.

Pls refer to garwyn post about full wipe solving the issue.

Its finally how we format our system.

Pls ask fiescto to share what he tried to format his system.

There was one user falk88 tried to run scandisk on his partition and got stopped at 89%.

3 to 4 users have come out of this factoryfs issue also. Only issue is that they have tried many things randomly and we are not able to replicate their steps. But have cured the so called emmc fry.


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As I said you earlier frying eMMC might be one of the causes.We should also take that in consederation as we dont know what exactly had happened to our eMMC (or may be you know what happened?pls do share here).But it is possible to fry your eMMC.But lets also try your method.Whatever it is.We need a method to make our device run good.Thats our motive.

 

[iyousif]

So it's now confirmed by Google developer, how sad!

 

[vijai2011]

Please study some electronics knowledge before shouting nonsense.

Never mind.Be cool now

 

[friedje]

And you....Have ever had your lessons on electronics???Go try puttins some high current inside your thumbdrive or ssd and see what happens.I know what I talk.Dont come in here flaming others with your nonsense,useless theories.Try to respect everybody,if you expect it in return.

Yes, sorry for you but i am an electronics engineer, and have been for 25 years.
So I repeat that you are shouting absolute nonsense, scaring ppl. for nothing.
Well maybe not for nothing, maybe you scare some enough so they won't flash a
bad kernel...

See the article just released where the bug is explained by a Google kernel dev.
Maybe you will believe his words if you doubt mine. Maybe it will keep you from shouting nonsense that you even try to back up with nonsense examples.

Yes if you put high voltages or currents into your note you will kill it.
Same goes for your SSD and your Thumbdrive.....Only nobody did either...

All three will also fry if you throw them into a microwave oven...

I was not flaming or attacking you, just asking you to stop shouting obvious nonsense. But finally why bother, your comments don't kill ppl, they just make some smile. Have a good day

 

[vijai2011]

Yes, sorry for you but i am an electronics engineer, and have been for 25 years.
So I repeat that you are shouting absolute nonsense, scaring ppl. for nothing.
Well maybe not for nothing, maybe you scare some enough so they won't flash a
bad kernel...

See the article just released where the bug is explained by a Google kernel dev.
Maybe you will believe his words if you doubt mine. Maybe it will keep you from shouting nonsense that you even try to back up with nonsense examples.

Yes if you put high voltages or currents into your note you will kill it.
Same goes for your SSD and your Thumbdrive.....Only nobody did either...

All three will also fry if you throw them into a microwave oven...

I was not flaming or attacking you, just asking you to stop shouting obvious nonsense. But finally why bother, your comments don't kill ppl, they just make some smile. Have a good day

Oh ok.One thing you remember.I will accept my mistake if you talk polite to me and give me some proof.And yeah I just said that the high current is one of the probability which I repeat in all my posts....And had a look at the kernel dev post and understood what causes the problem.Sorry for flaming (if so) you too...

 

[prabhu1980]

Dear Friends

I havent heard of failures of high voltages because logically there are protection circuits after the battery.
You cannot pass a high voltage because voltage is limited by battery.

What you are saying about frying happens in electronics due to static current, not bt our batteries or circuits. They are tested well amd indeed designed well to protect from these issues.

We are scared. ... Thats the truth

We havent found the root cause.

Hence we are in a paranoia with emmc failure as it is the easiest or safest way to blame.

Lets wait and time will tell.

We have to control our emotions on attacking people and attack the issue.

Yeah Vijai I will not beleive the emmc fry because it is a dead end and no dev is required after making this statement hence beleive the other side also. PLUS we still dont have proof of emmc overvolting failure.

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[Goldie]

We are scared. ... Thats the truth

We havent found the root cause.

The root cause is detailed in the PSA announcement thread post 4

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[SpyderTracks]

Thanks all for the further info, makes more sense now.

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[friedje]

Dear Friends

I havent heard of failures of high voltages because logically there are protection circuits after the battery.
You cannot pass a high voltage because voltage is limited by battery.

Sorry for going off-topic, just to make some basic things clear.
1st you can make very high voltages even with a low voltage battery.
Take for example the 'old' flashes on Cameras. Those were fed by LR6
batteries and the flash made by a Xeon bulb being lighted at 5Kv.
Or the DC-converters in a car making 24V out of 12 or even 110AC or 220AC
out of 12V.

Now going back on topic : The EmmC is not only written when being flashed.
It is also written during regular use. Flashing or Wiping or Clearing, or Normal
write cycles, don't overvolt the chip, there is absolutely no worry from that happening. As I understand from the comments of the Google dev, Samsung decided to flash the Emmc in some high-speed mode which screws up the
writing process due to timing problems.

I am running the LPY, and I only hope that they enabled this high speed mode
only during the flash-proces and that the kernel doesn't use it when operational.
Cause this last thing would mean that my phone can brick at any moment.
In that case the only safe advise would be to flash back to GB and pray the
flashing goes well....I however prefer using the LPY without wiping
It would have been nice to have a confirmation from the Google dev that once
succesfully flashed, just running the kernel is safe as any other, but only Sammy can tell.

 

[prabhu1980]

I completely agree with you.
So that sounds like we can have a software based patch for our issues.

Great! as it sounds logical now....

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