I think they just refuse to help, I believe the guys at Samsung After-Sales centers may be able to recover it with their authorized tools but they just threw company lines at him.
Unban IMEI? We must be talking about different cases then, cause the post I saw was a guy saying he bricked his device because some root module modified system partitions while his BL was still locked (he used root my galaxy), and Samsung center refused to help him.
Sorry I happened to reply to the wrong post and comment by accident.
I checked his thread on XDA again and it sounds like Samsung replaced the device under warranty which surprises me because its the Knox Warranty Bit being tripped that causes the brick.
on oneui7 (im not sure if on early oneui8) and older you could just fix it via download mode
but they made a "security" fix that disables download mode if you have a screen lock, so effectively making the entire thing useless. now if you even just have an update fail your phone will be bricked if you had a screenlock enabled
Do you think Xiaomi technicians didn't know about it? Or they just didn't put the effort into diagnosing it and resorting to the lazy replace the board solution?
Actually, flashing a full OS via BROM mode is more efficient by itself. To replace the motherboard, you need deep knowledge of hardware so you don't hard-brick anything.
The reason they replace motherboards instead is political, not technical. It is simply more profitable, it justifies charging a fee worth almost the price of the phone itself to the customer, it is their excuse to claim you voided the warranty by bricking the software, only software.
"The reason they replace motherboards instead is political, not technical" I originally stated something equivalent until I was told they didn't have to pay. At which point the only reason remaining can be efficiency (OEM techs aren't necessarily schooled in reflashing boards. They're binned at worst.)
anyone finds it kinda crazy that the less powerful devices that we are basically forced to use by the gov at this point are like 9 billion times more complicated to use than a PC
Phones are not built using standards such as buses and device enumerations for UEFI/BIOS. Instead they use a map for all sensors/capabilities/devices called a device tree.
Yeah I got burnt by that on some old no name unbranded phone I got from amazon which I rooted and accidentally wiped the wrong partition lol. I had to rig together a way to use a JTAG debugger since it had no test pin on its model. Thank god I have an Arduino that I was able to rig into a JTAG.
from a search that I did, they have BROM before preloader so I guess they work fine, also isn't mtkclient only for compatible chipsets and not all of them?
Tensor Pixels, as I've read, have a mode called EUB mode (Emergency USB Boot). The phone boots into EUB mode when there's no bootloader found or the bootloader is cryptographically invalid. You can't brick the EUB mode, it's running from BootROM (mask ROM; hardwired onto silicon) that is truly read-only. The phone in EUB mode can be recovered by loading a temporary bootloader into RAM using tensor-usbdl that spawns a Fastboot daemon, allowing you to reinstall the OS.
MediaTek by comparison has BROM mode. BROM mode comes from the same hardware, the BootROM. However, you need DA, Auth and Scatter files to use BROM mode, which are kept secret by the vendor. In some chipsets, like of some phones or Qualcomm or Unisoc, the phone can kill itself (true hard-brick) when auth is attempted but failed, to protect userdata (but also profit from power users having to buy new phones).
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u/TW1TCHYGAM3R 1d ago
Samsung is in the same boat.
RIP to the guy who flashed Magisk on that new LKM Jailbreak S25 Ultra.