Hacking I think my EMMC is dead/corrupted?

MyPSPIsDeadBigSad · 2024-10-06T05:33:05+0100

So I got my modchip (RP2040/picofly) installed last night on a XAW7002 switch and it booted into Atmosphere after doing the necessary prep, but launching any homebrew app immediately gave me 2168-0002 errors. Launching OFW worked fine.

Since I was getting errors I tried updated sigpatches, it didnt fix the crashing so I deleted the atmosphere folder and did a fresh transfer, and now my switch is just dead.

It still loads hekate but trying to boot into any firmware results in just a black screen, and even gave me the orange screen of death one time.

I tried restoring the nand through hekate (boot 0 & 1), but it finishes in 1 second and says something about the emmc being in slow mode. I'm really lost at the moment and really need some pointers.

Any help would be greatly appreciated. Thanks!

Hayato213 · 2024-10-06T06:10:35+0100

If launching ofw then the problem is probably the rp2040.

MyPSPIsDeadBigSad · 2024-10-06T06:11:10+0100

Hayato213 said:
If launching ofw then the problem is probably the rp2040.

Thanks for responding. As in I didn't install it properly or it's dying?

Hayato213 · 2024-10-06T06:38:00+0100

Could be your soldering considering it throw emmc being in slow mode even though you said you able to boot ofw.

MyPSPIsDeadBigSad · 2024-10-06T06:40:17+0100

Hayato213 said:
Could be your soldering considering it throw emmc being in slow mode even though you said you able to boot ofw.

No sorry for my bad wording. It does not load into official firmware either. It sayd "pkg92 failed" when trying to load OFW

randy_w · 2024-10-06T06:46:09+0100

XAW7002 is a patched v1, so there's no soldering involved with the emmc. It simply clips onto the modchip. I'd suggest removing the modchip (you can leave the cpu ribbon in place, no need to desolder it) and reconnect emmc to motherboard, see if it boots up. Afaik some batches of rp2040/picofly chips could potentially cause emmc error even erasing the partition table due to bad wiring design

Hayato213 · 2024-10-06T06:46:41+0100

MyPSPIsDeadBigSad said:
No sorry for my bad wording. It does not load into official firmware either. It sayd "pkg92 failed" when trying to load OFW

I would say it is still your soldering check if you bridge something on your motherboard.

MyPSPIsDeadBigSad · 2024-10-06T06:51:07+0100

randy_w said:
XAW7002 is a patched v1, so there's no soldering involved with the emmc. It simply clips onto the modchip. I'd suggest removing the modchip (you can leave the cpu ribbon in place, no need to desolder it) and reconnect emmc to motherboard, see if it boots up. Afaik some batches of rp2040/picofly chips could potentially cause emmc error even erasing the partition table due to bad wiring design

Really wish I took the time to properly research before doing that solder job...

I just tried connecting the emmc directly to the motherboard. Just a purple screen

Post automatically merged: Today at 6:52 AM

Hayato213 said:
I would say it is still your soldering check if you bridge something on your motherboard.

I mean it was kinda working until I reinstalled Atmosphere. Could I'll check the soldering as a last resort, right now I want to rule out any software issues.

randy_w · 2024-10-06T07:01:52+0100

MyPSPIsDeadBigSad said:
Just a purple screen

Unfortunately your emmc is either dead or wiped. I don't know if there's anything you can do at this point, if you haven't made a full emmc backup your switch is essentially banned. It should be an easy fix though, get a replacement emmc chip and a better quality picofly chip, then follow sthetix's unbrick/emmc rebuild guide. Or restore your emmc backup if you made one before.

You can boot to hekate and take a screenshot of the emmc info page, see if the emmc is detected properly and if partition table is empty

MyPSPIsDeadBigSad · 2024-10-06T07:05:00+0100

randy_w said:
Unfortunately your emmc is either dead or wiped. I don't know if there's anything you can do at this point, if you haven't made a full emmc backup your switch is essentially banned. It should be an easy fix though, get a replacement emmc chip and a better quality picofly chip, then follow sthetix's unbrick/emmc rebuild guide. Or restore your emmc backup if you made one before.

You can boot to hekate and take a screenshot of the emmc info page, see if the emmc is detected properly and if partition table is empty

I did make a full emmc backup and when I try restoring it, it just instantly reaches 100% and says the emmc initialized in slow mode. This really sucks.

randy_w · 2024-10-06T07:16:42+0100

go to hekate and take a screenshot of console info - emmc anyway, if you can boot hekate on a patched switch then at least boot0/1 are still good since modchip writes payload to that area and boots from it

also check the emmc connector and make sure there's no bent pin or any physical damage

MyPSPIsDeadBigSad · 2024-10-06T07:32:44+0100

randy_w said:
go to hekate and take a screenshot of console info - emmc anyway, if you can boot hekate on a patched switch then at least boot0/1 are still good since modchip writes payload to that area and boots from it

also check the emmc connector and make sure there's no bent pin or any physical damage

Just noticing now that the microSD card is formated to FAT32. Shouldn't it be exFAT???

bvang913 · 2024-10-06T14:41:12+0100

Fat32 is what you want for the sd card.

R0nny01 · 2024-10-06T18:10:17+0100

Sounds like emmc is dead or the connection between emmc and mainboard. You could buy 32GB emmc board replacment and write boot0, boot1 and rawnand back to it with hekate. Are u able to mount the emmc to a computer with the usb tools in hekate? So it shows up in a partition manager

MyPSPIsDeadBigSad · 2024-10-06T18:15:38+0100

I think I found out my problem... I think I overwrote my sysmmc with emummc because I followed a guide on restoring mmc which might've been incorrect... Don't know if I'm allowed to link it but it's

R0nny01 said:
Sounds like emmc is dead or the connection between emmc and mainboard. You could buy 32GB emmc board replacment and write boot0, boot1 and rawnand back to it with hekate. Are u able to mount the emmc to a computer with the usb tools in hekate? So it shows up in a partition manager

Yeah a lot has happened since my last post. I discovered the nand was overwritten somehow.

Only "BOOT0" was displayed in the partition list in Nx nand manager. I restored it, but still got a black screen when trying to boot in all firmware

I decided to redo the soldering on the modchip, and now if i try to boot OFW it displays the Nintendo logo before getting stuck on a black screen. I also tried connecting the emmc directly to the mainboard again and it's just a black screen now.

R0nny01 · 2024-10-06T18:25:45+0100

MyPSPIsDeadBigSad said:
I think I found out my problem... I think I overwrote my sysmmc with emummc because I followed a guide on restoring mmc which might've been incorrect... Don't know if I'm allowed to link it but it's
Yeah a lot has happened since my last post. I discovered the nand was overwritten somehow.

Only "BOOT0" was displayed in the partition list in Nx nand manager. I restored it, but still got a black screen when trying to boot in all firmware

I decided to redo the soldering on the modchip, and now if i try to boot OFW it displays the Nintendo logo before getting stuck on a black screen. I also tried connecting the emmc directly to the mainboard again and it's just a black screen now.

Do you have full backup from the emmc?
Does hekate still shows emmc error?
Did you tried to mount "eMMC RAW GPP" in Hekate USB Tools?

randy_w · 2024-10-06T18:34:47+0100

Like i said, the picofly chip you're using is probably poorly designed with signal interference. No matter what you write to it it will end up with corruption. You need to get a better quality chip, resoldering cpu ribbon doesn't do anything in this situation. Or you can connect the emmc to motherboard directly and solder A/B/C/D/3.3V points from emmc to picofly chip directly, those points should be exposed on picofly, but need to use a multimeter to figure which one is which:

And on emmc:

jkyoho · 2024-10-06T18:58:08+0100

show picture of your modchip and measure the on-board resistors setup

Hacking I think my EMMC is dead/corrupted?

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