Here I have a 100% fix for the galaxy note 4 emmc error and random reboots,

arnookie · Jun 3, 2020

PlaysWithElectrons said:
I have a comment on ARNOOKIE's fix. As a Tech, I fail to see how insulateing an IC from its SilPad is a good idea under ANY circumstances, more likely to do more harm than good. As substitute heatsinks go, aluminum foil is a poor choice, copper is way better. I would be more inclined to try ARNOOKIE's fix if he provided a DARN GOOD reason to uncouple an IC from it's thermal sink.(and I cant think of one GOOD reason)....IF the problem he believes he's solveing is a heat issue, I would replace the current SilPad, add a piece of copper foil the same size, and place another SilPad on top of it to add mass to the sink. But what do I know? Im just a 64 year old Career Technician.

I do actually suggest using aluminium or copper in my video description. If you look through my video comments you will see that many people have had success doing this fix even with the cardboard shim. The only thing I would not suggest is using thermal paste especially any that are conductive. ?

Will Rickards · Jun 4, 2020

PlaysWithElectrons said:
IF the problem he believes he's solveing is a heat issue

The problem isn't heat but the poor connection of this component to the board. The increased pressure by adding the shim increases the contact area. It does appear there is some defect in the manufacturing of the board or the chip itself or the board design that causes the connections to degrade over time. The only real resolution is to remove and reattach the component but we're not all able to do that.

taschenck · Jun 15, 2020

didn't work

thanks for the work around but it didn't work for my note 4. didn't break anything and tried it 3 times but to no avail. time for a new phone.
Thanks anyway, glad it worked for many people.... cheers

ilabstudios · Jun 23, 2020

Works!

Just did this hack and it works. Sim and s-pen still working.

What I did.
I knew corrugated card would compress, so I used thick card from a notebook cover.

I placed the shim for the MMC on the thermal insulation pad using nothing for bonding (as the card is thick so a pressure fit is enough), and then used tiny shims for the two connectors - it was important that the connectors were aligned straight. It was then a matter of pressing gently till I heard two snap sounds, indicating both connectors were attached. That's it.

Glad it's working, but I still think it is time to move on and get a new device. Every Lineage based rom I try still has the bluetooth bug, which is aaf.

J. C. Maxwell · Jun 25, 2020

Just did this fix. I happen to have a pair of digital calipers for measuring thickness, but I know that most people do not.

It looks like most credit cards are 0.76mm in thickness. I ended up folding aluminum foil until it was barely thicker than one.

I found an old used gift card and created two shims for the connectors mentioned in the video. When looking at the phone upright, the 0.76mm gift card shim was perfect on the right connector. For the one on the left, it was too thick, though. Either use sand paper on the gift card shim or find something slighly thinner. Also, the connector on the left moved toward the bottom of the phone during disassembly and I needed to push the connector and ribbon upward toward the top of the phone to ensure a proper connection.

Anyway, I hope this helps, and thanks OP!

thumper300zx · Jul 2, 2020

First....pin a rose on that guys' nose, eh. "We're not all able to do that" career technician. Geez dude.

Arnookie -- thank YOU! You have helped lots of people get their Note 4s working. I mean, the thing runs Android OLD and it's not worth the money for normal people to go get the chip reflowed. This is perfect! I got mine done with Cooper tape, several layers to about .7mm (measured with digital caliper). Much thicker is a problem. It didn't compress enough for proper reassembly. Once I got it right, it's working without freezer trick! Just my kid using the phone for WiFi and it's perfect for that.

The separation of phone parts was tough. The adhesive is ok, but it's snapped into the frame pretty tight. I was careful and got it done safely. I scuffed a little bit of the backing from the screen around the edge, but almost negligible amount.

Thanks again, man. A great DIY for an inexperienced, but willing noob!

frugalpov · Jul 3, 2020

wolfie1_0 said:
I hate to be the bearer of bad news and rain on the parade, but this will definitely only be a temporary fix, like those screw kits for the Xbox 360 heatsinks. The true way to fix it is to reflow/reball the cpu/eMMC package. In the long run this will be putting more pressure on other parts of the main board and actually preventing the cpu from cooling properly as you've put a non thermally conductive material inbetween it and the chassis.

I actually am typing this from a note 4 I reflowed 2 days ago, we shall see how long this will last

But I was on here looking to see if there was anyone here with an old device/old board they've replaced that they would be willing to part with so I could practice and maybe attempt a reball. Hit me up in PM's if you do

Hey did you end up getting this fix to stay working?

mikel023 · Jul 6, 2020

Can I do this to a new(or most likely, refurbished) motherboard to prevent this from happening in the first place?

And,

arnookie said:
..
Also you could use Aluminium Thermal pads or Copper instead of cardboard for better thermal cooling. Just make sure its 0.5mm or 1.2mm thick but no thicker!

On that 0.5 to 1.2mm, is that on the top of the existing thermal pad? Can I replace instead the existing thermal pad with a 2mm thick one?

BoyBawang2 · Jul 25, 2020

Hi, My stock unrooted Note4 hangs every now and then and it still does even after factory reset. It seems it hangs when I feel some heat at the back during usage but I don't even play games. I just do facebook and browse. Sometimes it reboots to download mode that I have to let it rest for few hours then it boots normally again. But I didn't see any Emmc error warnings. Do you think this is the issue?

sessionLayer3 · Nov 6, 2022

arnookie said:
Here I have a 100% fix for the galaxy note 4 emmc error and random reboots,
Including unable to unlock phone, deep sleep issues, and random behaviour.
Also fixes overheating and battery issues as well as makes GearVR work without heating issues.
This is a hardware fix and so far has been 100% effective on all devices I have repaired,
Its an easy repair and takes about 20 to 30 minutes to complete.
No special tools are needed and I have posted a video below to show how this is done.
All you will need is a bank card or spudger, a pair of scissors and some cardboard from a cereal box.
You may also need a drop of glue or blue tack.
Although this usually stops all issues on most devices you may still need wakelock but usually it's not needed.
Paypal donation welcome if it fixed your phone you could donate here https://paypal.me/Arnookie anything helps no matter how small.

Anyone attempting this please do not go under the glass try push it forward from the battery compartment and then run a card around the edges of the grey plastic. Just go carefully when doing this and don't rush. You can heat the screen with a hairdryer to make removing the phone from the casing easier. It's the best way to do it.
Also you could use Aluminium Thermal pads or Copper instead of cardboard for better thermal cooling. Just make sure its 0.5mm or 1.2mm thick but no thicker!
You will get great 3d mark results using Aluminium, Copper or Thermal pads. "Do not use any kind of thermal pastes!!", You have been warned! But even using just cardboard works great as well.
Don't blame me if you break your phone more by attempting this. But if your phone is not working, you really have nothing to loose.
If you have an old phone you would like to donate please send me a PM.

Would Aluminium Tin foil work as well,making it 0.3mm thick,as my Note 4(910f) sometime's won't boot from Twrp,so i put it in the freezer in separate bags,then it boots .I am sick of this note 4 not rebooting when trying to flash a 18.1 Linage.I am using Twrp 3.22.0,maybe a higher Twrp might fix it,or your way,but thank you Sir.

Hendrix7 · 2025-10-31T22:24:43+0000

thumper300zx said:
Once I got it right, it's working without freezer trick!

sessionLayer3 said:
so i put it in the freezer in separate bags,then it boots

Timpaa said:
But I can still turn on the phone without the freezer trick, which is nice!

Does anyone know a technical reason why coldness improves the chances that it will start?

And you put it in the freezer without the battery, right? Coldness reduces the current a battery is able to output due to slowing down the chemical reactions, so it should only be freezed without the battery.

From my experience with an old device, coldness indeed helped in the past, but it doesn't anymore. First it started not waking up from stand-by, then it showed this eMMC error message at boot, and now it doesn't start at all, so whatever this issue is, it gets worse over time.

I doubt the eMMC itself is responsible for this issue, given that it stays on as long as the CPU doesn't go into deep sleep.

My closest guess is that the battery inflation causes some internal damage that leads to this issue. The Note 4 lets a battery charge up to 4.4 volts, which pushes the limit of Lithium-ion batteries. Samsung's goal seems to have been maximizing the charging speed, but it stays at 4.4 volts after the charging is completed.

If a Note 4 is left connected to the charger, the battery voltage stays at 4.4 volts for a prolonged time, which apparently leads to battery inflation.

Has your Note 4 battery inflated too? (possible manufacturing error)

I thought this issue only affected me, but a friend of mine who also used a Note 4 had this happen to him on two occasions: the original battery and a replacement battery inflated. I would like to find out if it affects anyone else. If yes...

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Here I have a 100% fix for the galaxy note 4 emmc error and random reboots,

arnookie

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Will Rickards

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taschenck

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ilabstudios

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J. C. Maxwell

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thumper300zx

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frugalpov

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mikel023

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BoyBawang2

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sessionLayer3

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Hendrix7

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Has your Note 4 battery inflated too? (possible manufacturing error)

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