Messed up big time. emmc corrupted without backup.

[Mustigusti]

I gave up on the idea that I'll get the save files back.
I tried reflashing the eMMC with this guide here . Its from sthetix and it uses a Donor NAND that Im then decrypting with my own key so it can be compatible. At least thats what I understood.

But as I did everything, and pressed restore eMMC, I got the error message that my eMMC is now in slow mode. Then I tried to boot and got a Nosigchk error. I tried booting again and got a fatal_error while running atmosphere. Every time I tried booting after that I just get nothing after the atmosphere logo, but another entry to the fatal_errors folder.

I searched a bit and some people were saying that the slow mode error comes from a physical damage to the NAND chip. I would get a new NAND chip but there is no reason it would get a physical damage while getting corrupted right? It has to come from the modchip.

Does anybody know more? Meanwhile, Ill try reflashing again in case I did something wrong

Post automatically merged: Feb 13, 2025

 

[Hayato213]

I gave up on the idea that I'll get the save files back.
I tried reflashing the eMMC with this guide here . Its from sthetix and it uses a Donor NAND that Im then decrypting with my own key so it can be compatible. At least thats what I understood.

But as I did everything, and pressed restore eMMC, I got the error message that my eMMC is now in slow mode. Then I tried to boot and got a Nosigchk error. I tried booting again and got a fatal_error while running atmosphere. Every time I tried booting after that I just get nothing after the atmosphere logo, but another entry to the fatal_errors folder.

I searched a bit and some people were saying that the slow mode error comes from a physical damage to the NAND chip. I would get a new NAND chip but there is no reason it would get a physical damage while getting corrupted right? It has to come from the modchip.

Does anybody know more? Meanwhile, Ill try reflashing again in case I did something wrong

Post automatically merged: Feb 13, 2025

What brand emmc?

 

[Mustigusti]

What brand emmc?

My current one or the one Im gonna buy? My current is Nintendo and the one im gonna buy also just Nintendo like from a Donor board

 

[Hayato213]

My current one or the one Im gonna buy? My current is Nintendo and the one im gonna buy also just Nintendo like from a Donor board

Current one

 

[Mustigusti]

Current one

My current one is what came with the console. A native Nintendo Nand chip. Im not aware that there are other vendors selling the NAND chip

Post automatically merged: Feb 13, 2025

My current one is what came with the console. A native Nintendo Nand chip. Im not aware that there are other vendors selling the NAND chip

Im not quite sure thats what you were trying to ask. My modchip is from HwFly

 

[Hayato213]

My current one is what came with the console. A native Nintendo Nand chip. Im not aware that there are other vendors selling the NAND chip

Post automatically merged: Feb 13, 2025

Im not quite sure thats what you were trying to ask. My modchip is from HwFly

I meant the emmc brand, there are a few brand in use like Samsung, SK Hynix

 

[Mustigusti]

Does the brand really matter? Cant I just get one from a nintendo switch donor board? Also Im not quite sure whether i even should buy a new one because if the nand chip is actually physically damaged it could get dfamaged again

 

[Hayato213]

Does the brand really matter? Cant I just get one from a nintendo switch donor board? Also Im not quite sure whether i even should buy a new one because if the nand chip is actually physically damaged it could get dfamaged again

OLED switch with modchip had problem with Sk Hynix causing the emmc being in slow mode.

 

[Mustigusti]

Update: I removed the modchip to see if stock boots. Boots perfectly so the flash mustve worked. Maybe I built the SD card wrong or the modchip is faulty. Will try fixing by building root correctly