ISFShax + Decaffeinator recovery help: vWii won't boot, vWii NAND Restorer "Error determining NAND type", Wii U now 160-0101

ieatsoap113 · 2026-07-15T04:53:18+0100

Hi everyone,

I'm looking for help from someone experienced with ISFShax, Decaffeinator, and vWii recovery. I've reached a point where I'm not comfortable trying anything else without advice.

System setup:

Wii U (USA)
ISFShax installed
Tiramisu/Aroma installed
Full NAND OG backup
Backup files:
- otp.bin
- seeprom.bin
- slc.bin
- slccmpt.bin

What happened:
I was working on my vWii while setting up WiiLink. After making those changes, the vWii stopped booting. Selecting "Wii Menu" from the Wii U Menu shows a black screen for a few seconds before returning to the Wii U Menu. Priiloader is no longer accessible.

What I've already tried:

Ran vWii Decaffeinator.
Initially it failed because FTPiiU was enabled. After disabling FTPiiU, Decaffeinator launched normally.
My usual recovery method is:
1. Run Decaffeinator.
2. Let it remove the required files.
3. Boot into Wii U System Settings.
4. Remove the SD card.
5. Perform a Wii U system update to reinstall the missing vWii titles.

Unfortunately, that workflow is now broken due to a 160-0101 error being thrown at me if I attempt to access the default WiiU meny (which has forced me to boot around it into tiramisu)

I also tried vWii NAND Restorer (the Wii U application), using my original slccmpt.bin and matching otp.bin from this same console. The files are in the correct location, but the application always reports:

Error determining NAND type

After the Decaffeinator attempt, the Wii U now throws:

160-0101

ISFShax is still functioning/installed, but not aware of any button combos I can access.

My questions:

What causes vWii NAND Restorer to report "Error determining NAND type" when using a valid backup from the same console?
Is there a recommended recovery procedure using ISFShax for this situation?
Should I be restoring only slccmpt.bin, or is there another recovery method I should be using instead?
Is there a way to force the Wii U to reinstall the required vWii titles if the normal Decaffeinator update workflow can no longer be completed?

I'm trying to avoid making the situation worse, so I haven't continued experimenting beyond this point.

Any help would be greatly appreciated. Thank you.

SDIO · 2026-07-15T08:02:05+0100

Remove the Wii disc from the drive

GABO1423 · 2026-07-15T14:04:19+0100

Should also mention that if you have ISFShax installed removing the SD is not enough to unblock updates. You need to make sure of the following:

The update folder exists, in the Aroma Boot Menu it should say on the lower right corner that updates are unblocked
You don't have the 5payldr.ipx file in the "wiiu/ios_plugins" folder
You aren't autobooting using the PayloadLoader, simply open the PayloadLoader Installer and make sure it says it's booting to the Wii U Menu instead of Health and Safety

Since ISFShax is installed, when minute is not loaded from the SD and you don't have anything on the SLC (fastboot minute or any plugins), the Wii U will boot with some bare minimum patches so it can still boot and not break due to ISFShax, and in that state all updates are blocked. This is why removing the SD won't work here.

ISFShax + Decaffeinator recovery help: vWii won't boot, vWii NAND Restorer "Error determining NAND type", Wii U now 160-0101

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