Hacking Mistakenly installed Fat32 Update on Emunand instead of ExFat, any way to reverse that

link1227 · Jul 14, 2020

jellybeangreen2 said:
Did you dump your keys correctly? - Id just delete and restart. But just remember to use checkpoint and export. If you have any saves on sysnand. Use checkpoint>export. Create a new emunand. Then use checkpoint on emunand >import. Done.

You just load biskeydump payload, and press the vol key, scan the qr code and save the text, right?

jellybeangreen2 · Jul 15, 2020

link1227 said:
You just load biskeydump payload, and press the vol key, scan the qr code and save the text, right?

Yep

link1227 · Jul 15, 2020

jellybeangreen2 said:
Yep

Yea that's what I did. I compared to an old emunand and it matched. I think the new one is just corrupted somehow.

I took the full.01-full.07 from the corrupted one, and used full.00 from a new emunand and it works, but has old saves. So the Full.00 is damaged somehow

edek778 · Nov 18, 2020

Hello,
I made the same kind of mistake (i'm using SxOS 3.0.5)
I was on CFW 9.1 (exFAT) and I've upgraded the firmware on 10.2 (FAT) using ChoidujourNX.
==> result : no longer able to boot on cfw from ExFAT SD Card.

I get a new SD card on FAT and i've copied on it last boot.dat from (SxOS 3.0.5), SxOS Directory , licence & 10.2 firmware.
==> with this 2nd SD Card from ChoidujourNX i've upgraded the firmaware from 10.2 (FAT) to 10.2 (exFAT).

But now when i'm putting back 1st SD card (exFAT), from SxOS menu when i choose to boot on Emuland : I observe Nintendo Logo then black screen.

Is someone can help me ?

HenryMin · Nov 18, 2020

edek778 said:
Hello,
I made the same kind of mistake (i'm using SxOS 3.0.5)
I was on CFW 9.1 (exFAT) and I've upgraded the firmware on 10.2 (FAT) using ChoidujourNX.
==> result : no longer able to boot on cfw from ExFAT SD Card.

I get a new SD card on FAT and i've copied on it last boot.dat from (SxOS 3.0.5), SxOS Directory , licence & 10.2 firmware.
==> with this 2nd SD Card from ChoidujourNX i've upgraded the firmaware from 10.2 (FAT) to 10.2 (exFAT).

But now when i'm putting back 1st SD card (exFAT), from SxOS menu when i choose to boot on Emuland : I observe Nintendo Logo then black screen.

Is someone can help me ?

1. Use fat32.
2. You can't flash firmware with same version
(i.e 10.2.0 -> 10.2.0 exfat)
So you should downgrade and upgrade to 10.2.0 exfat firmware.
3. Use Daybreak instead of Choidujournx if you can.

edek778 · Nov 18, 2020

Hello,

Thank you for you quick answer but it didn't work,
From Fat32 sd card i've downgraded emunand to 10.1 (FAT) and re-upgraded to 10,2 (ExFAT),
But when putting back ExFAT sd card : i'm still getting black screen after choosing to boot on emuland from SxOS boot menu.

HenryMin · Nov 19, 2020

edek778 said:
Hello,

Thank you for you quick answer but it didn't work,
From Fat32 sd card i've downgraded emunand to 10.1 (FAT) and re-upgraded to 10,2 (ExFAT),
But when putting back ExFAT sd card : i'm still getting black screen after choosing to boot on emuland from SxOS boot menu.

You need to install exFAT driver in your emuNAND (in your original sd card

)

edek778 · Nov 19, 2020

Hello,
I don't remember having install exFAT driver on my exFAT sd card but it was working properly on CFW 9.1 (exFAT).
Why should I made it now ?
How to do that ?

HenryMin · Nov 19, 2020

edek778 said:
Hello,
I don't remember having install exFAT driver on my exFAT sd card but it was working properly on CFW 9.1 (exFAT).
Why should I made it now ?
How to do that ?

exFAT driver is in your NAND (iirc pkg2 partitions)
You flashed non-exFAT firmware to your emuNAND, so the driver is missing.

You may have to format your non-emuNAND partition to fat32.

BaamAlex · Nov 19, 2020

edek778 said:
Hello,
I don't remember having install exFAT driver on my exFAT sd card but it was working properly on CFW 9.1 (exFAT).
Why should I made it now ?
How to do that ?

You would do well to use FAT32. exFAT is crap and leads to 100% data loss.

gwydion5 · Feb 24, 2022

Hey I just had the same Problem but i alredy fixed it i just installed emuMMC again without deleting anything and evrything worked fine ! Easy fix if you mistakenly installed Fat32 Update on Emunand instead of ExFat

impeeza · Feb 25, 2022

Man, you don't need to complicate the things, as stated at first FORMAT YOUR SD FAT32 you will be less prone to corruption.

If you don't want to loose anything is simple: MADE A BACKUP

For the Emunand on a Raw partition use the great tool EmuTool and for the exFat partition, just copy the files to a safe location.

Use fat32format (the gui version is better for noobies) http://ridgecrop.co.uk/ and then restore your files. if you don't touch anything besides the formatting of the first partition your emunand should get untouched and works normall, but if you messed it (normally by not reading) you can restore using EmuTool.

Easy, on my 240 GB SD Card a full backup and restore (almost full) took me 30 minutes.

Hacking Mistakenly installed Fat32 Update on Emunand instead of ExFat, any way to reverse that

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