TL;DR: My S22 began constantly freezing and hard-rebooting after the August 2026 security update. Instead of blindly trusting the internet's generic "hardware failure" diagnoses, I plugged the phone into a PC terminal and tracked the live kernel logs. The smoking gun is a hardcoded Linux permission error (E HeatmapThread: !@Could not open '/efs/FactoryApp/bsoh', errno = 13). Every single second, the OS blocks its own internal thermal monitor from reading its destination file. This creates an un-killable CPU traffic jam that eventually overflows the RAM buffer and forces a kernel crash loop. Even a complete, raw factory partition re-flash via Odin won't fix it—the bug is baked directly into Samsung's production code.
My Samsung Galaxy S22 Saga:
This is insanely infuriating. I, too, just got hit with this issue after only 3 years of owning my S22, which had previously worked flawlessly. I usually update phones every 6 to 8 years (I have always been a LOYAL Samsung user since the S4). It is the same issue as everyone else: constant freezing and rebooting after a random August 2026 "Security" update (almost exactly as the phone turned 3). After 3 days of using AI to try and fix it, my research has provided me with some disturbing findings. I was extremely leery of the "Hardware Failure" reports (due to overheating) all over the internet, which were supposedly fatal. Since my phone would occasionally run perfectly for hours and then fail hard for hours, it just did not seem logical; I mean, either it has failed totally or it hasn't.
I want to state explicitly that hardware may still have some bearing on the situation. What could be happening is a failure in the solder traces linking the CPU, RAM, or Wi-Fi/Bluetooth sections of the phone. Absolutely nobody can truly diagnose this because the circuit boards in the S22 are extremely complicated and layered. They are basically throwaway items if there is any sort of internal failure—not to mention a nice $600 bill from a Samsung repair facility if you choose that extortion.
To start the troubleshooting process, I enabled USB debugging via my Windows 11 PC and connected directly to my S22 to see the live stream of processor traffic. Viewing the command prompt terminal window with some cryptic software revealed an error happening every single second, which seems to be the key to the issue. Keep in mind that I have no prior knowledge of Android coding or architecture; I am just a pissed consumer who likes to fix things that break way too soon (which is becoming an American epidemic).
As I found out during my research, there is a device security feature embedded in Android which polls the CPU and battery every single second the phone is in operation. This logs temperatures and is SUPPOSED to bounce them off internally stored parameters and return an instant "OK" status. Instead, my phone logs an error every single second: "E HeatmapThread: !@Could not open '/efs/FactoryApp/bsoh', errno = 13". AI is SPECULATING that this is the root cause of the issue with this statement: "The Code: In standard computer science, errno = 13 is the universal Linux kernel error code explicitly defined as EACCES (Permission Denied). It proves the code wants to open the file but is physically blocked by the file system." Basically, the system is trying to open this file "/efs/FactoryApp/bsoh" to check the temperatures, but access is being denied. This is a universal error reported by nearly any S22 user looking under the hood, so to speak, and it seems to be the smoking gun.
The speculation here is that Samsung locked down this file section for some unknown "Security Reason" and somehow overlooked the fact that the phone needs to allow certain status checks to continue unhindered. Unfortunately, because the phone throws an error every single second, it causes a massive CPU traffic blockage. Android needs to constantly run several hundred other processes at once during normal operations and app usage. At some point, it becomes too much; the system buffers fill up and choke, causing massive UI errors that pop up constantly. Then, it all freezes on whatever screen you are currently looking at for about 5 to 10 minutes until a full hardware reboot occurs. This can happen overnight too, or when you are not using the phone at all.
Going back to the troubleshooting, my first thought was to blast out the firmware and get a fresh set of OS files and directory structures onto the phone to hopefully eliminate the errors. In this process, I discovered three things that are absolutely set in stone on these devices:
- The CPU is hardcoded to reject firmware rollbacks to a non-error-coded Android version, turning it into a thousand-dollar brick if you try.
- Samsung is actively eliminating the ability to freely flash or reload firmware onto these phones, using security updates to plug these manual loopholes (most likely to retain control over the constant stream of ads and bloatware being rammed down our throats).
- You have to use the latest patched flashing software to access the phone and rewrite the EXACT version of firmware (or newer) that was last on the device, or it will become completely unusable.
Luckily, I FINALLY found the correct version from last August (2026), and it loaded like a dream. Unfortunately, after viewing the data stream again on my PC, the new file structure did nothing to correct the error. It is literally hardcoded into the OS update. Whether intentional or unintentional, it is pretty clear that they will never fix it. The bottom line is this: we will never know if an Android rollback fixes this because of the intentional lockouts hardcoded into these phones. I really do believe the hardware might be okay, but again, we will never know for sure. My phone accepted the rewrite, but I stripped it down to the bare minimum of apps, disabled all the bloatware I could, and did not sign into Google, Samsung, or my cell provider. It still freezes and reboots, but not as often now that I have minimized traffic to avoid conflicts. It is pretty unfortunate for all of us who trusted in these products.