Boot Loop root cause and solution! Do the same!

[Members_2eKoj97]

Root cause
If you have experienced a persistent boot loop issue after the 6.1 update, it is highly likely that your phone is already ruined, and there is nothing you can do through software fixes or tricks to resolve this issue permanently. Your phone is bricked.

Samsung's software update caused a prolonged boot loop for many devices. This boot loop overheated the CPU and damaged the connection between the motherboard and the solder balls of the CPU, especially in phones using low-quality Exynos processors (Samsung's own CPU). While CPUs can technically be reballed, finding a repair shop capable of performing this complicated process is extremely difficult, as it requires advanced skills and equipment.

CPUs are generally tested against heat damage and are designed to shut themselves off when overheating occurs. However, in certain scenarios, such as exposure to external forces like sunlight or when safety mechanisms fail during the early stages of CPU initialization, this protection may not activate in time. The constant boot loop caused by the software update impacted the CPU, subjecting it to extreme stress levels in the early phase of initialization that caused permanent damage to the soldered balls of the chip. This destructive "boot loop cycle" combined with the lower quality of Exynos CPUs, practically guarantees that affected devices will fail.

Solution
Raise and articulate your issue through Samsung's "Email the CEO's Office" communication channel, even if your warranty has expired. Samsung Service Centers lack the decision-making authority to escalate such issues, or they simply may not care enough. I have personally tried reaching them, but they were of no help at all, only "Member Stars" here are more unhelpful, ignorant, unwilling, reluctant about this issue than them. They will neither represent you nor take responsibility for resolving this issue.

You need to take the initiative and directly point out to Samsung that this problem exists. If they confirm that your phone was indeed damaged due to their software update, they may repair it free of charge (replace the entire motherboard where the CPU embedded). It is unfortunate that customers must go the extra mile to receive proper service and cannot rely on a trustworthy experience after their once perfectly functioning phone was ruined overnight by a software update.

Raise your issue, post about it, visit service centers, email the CEO’s office, start a conciliation process, or even pursue legal action if necessary. For me, the "Email the CEO's Office" option (link here , you might need the version of this page local to your country, I am from Europe) was effective in getting my phone repaired.

[Tourbillon De La Vie]

https://eu.community.samsung.com/t5/galaxy-s22-series/another-s22-ultra-boot-loop-victim/m-p/1172664...

https://eu.community.samsung.com/t5/galaxy-s22-series/s22u-phone-no-longer-working/m-p/11722560#M531...

[ivoszbg]

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@Members_2eKoj97 wrote:

Root cause
If you have experienced a persistent boot loop issue after the 6.1 update, it is highly likely that your phone is already ruined, and there is nothing you can do through software fixes or tricks to resolve this issue permanently

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Of course... Every SoC is going to fail eventually. Some fail earlier, some later. That doesn't mean you can't do anything about it, as long as the part of it that's failing is not critical (ex. a PCIE block failing, or a non-CPU0 cluster issues).

Samsung's software update caused a prolonged boot loop for many devices. This boot loop overheated the CPU and damaged the connection between the motherboard and the solder balls of the CPU, especially in phones using low-quality Exynos processors (Samsung's own CPU).

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1. A boot loop definitely will not cause the SoC to reach temperatures that would damage it. 50c would do nothing to the substrate to die connection. You'd be surprised at how durable SoCs are.

2. How are the exynos SoCs low-quality...? This post just seems like it's been driven by emotion more than rationality.

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CPUs are generally tested against heat damage and are designed to shut themselves off when overheating occurs.

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Yes, and this defeats the your main point.

However, in certain scenarios, such as exposure to external forces like sunlight or when safety mechanisms fail during the early stages of CPU initialization, this protection may not activate in time. The constant boot loop caused by the software update essentially "*****" the CPU, subjecting it to extreme stress levels in the early phase of initialization that caused permanent damage to the soldered balls of the chip. This destructive "boot loop **** cycle" combined with the lower quality of Exynos CPUs, practically guarantees that affected devices will fail.

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...

Exynos SoCs use the so-called TMU (temperature measurement unit) hardware, which has sensors spread across all vital points of the die - the clusters, the GPU, the NPU, etc etc etc. When you hit a certain temperature (which the drivers will make sure happens), the block, which the sensor is assigned at, will have DVFS adjust frequency/power to a lower level. If it reaches a critical temperature, the driver sends a poweroff/reboot request via ACPM.

Drivers for this are present both in S-LK/S-BOOT and the kernel. There's no way it will reach a high enough temperature without a short on the PCB. The reset process in itself is not power-hungry, it doesn't put heavy loads on the CPU0 (which usually is the only one used through the BROM -> S-LK) nor the rest of the cores. It would just drain the battery or cause an OLED burn-in at most.

[AntS]

Hi @Members_2eKoj97 ,

I've edited out the unnecessarily OTT provocative language from your post. I've also removed the duplicate threads that you posted that fell foul of the board's spam auto-filter as this place works best when conversations are concentrated rather than spread out.

Also, to add, the Members Stars are just Samsung customers like yourself. They devote their own time and efforts unpaid of their own free will. They would be unable to do more than they have in this matter, which is to provide advice based on their own knowledge and experience.

You have been given a platform and a voice here, please use it wisely and respectfully to all the members of this community.

Thank you.

[Reylob]

Hi @Members_2eKoj97 

I understand your frustration and I hope that Samsung does take action to solve the issue. I do not think your post is technically correct, but @ivoszbg already posted about it.

@Tourbillon De La Vie  already posted links where Members Stars suggest a similar solution to yours. Furthermore, Members Stars do not have the responsibility or ability to represent any other member or solve the issue. We, like you, bought a Samsung product, that is all the connection we have with Samsung.

We are part of the community forum like any other member, where we try to help to the best of our abilities.

I really hope that a solution does come soon.

[Members_2eKoj97]

I appreciate that you have answered such a way that members can understand it and not just believe it because it sounds smart... great answer to get upvotes from others though... The main message was what you have pinpointed as well, it can't happen but it still factually happened for masses, hence it's low quality lol... should I add technical mambo-jambo to collect credit from the community? I see this works extremely well here, without giving any practical advice to users... keep up the good work member stars!

[Members_2eKoj97]

my problem is solved, I'm just giving practical advice to others... I have not seen any similar from those members or other member stars, just canned ones with a lot of blaming, reluctant to believe anything and utterly biased, just the usual fanboy reactions... big surprise that you, you say otherwise... not, actually...
sure Samsung never fails (literal battery explosions and recall because of a variaty of issues with battery, screen, camera and heating problems) and considerate to admit everything to the public for the common good, yeah🤡 sure, there is zero chance it can happen again, they would be the first to go ahead and help everybody!

[Reylob]

Just on the first link from @Tourbillon De La Vie , pointing to the post below yours, @BandOfBrothers and myself suggested that this something that Samsung should address. I mentioned that as many as you should address Samsung as group because it will carry more weight.

If you want to give practical advise please remove all emotional and loaded language and concentrate on the point you want to make.

It seems that for you  Members Stars is anyone who might not agree with your post according to you reply to @ivoszbg . We are all Samsung's customers. We have no power to solve or take responsibility for any issue that any Samsung product might have.

In any case, I am delighted your problem is solved and that it will be for anyone affected.

Have a great day.

[Members_2eKoj97]

not at all, my stance about member stars just a reflection of this fanboy community... 
Some critical-thinking about Samsung (or "our" loved products, which "we" own and not the phone owns "us") would do wonders here for sure!

[JAMES4578]

The Boot loop issue needs to be addressed, Member stars are not saying otherwise. Members though do not always frame their criiticsm in the best way. Whilst stars are Samsung fans in my opinion we are all objective.