Wii u flashing Blue

[Joel165]

Hey guys,
I recently bought a defective Wii U on eBay, so unfortunately I can't say anything about the console's background story. The Wii U arrived and only flashed blue without a picture. While searching for solutions on the internet, I came across this forum. Thanks to the troubleshooting page on this forum, I was able to narrow it down to a presumably corrupt SLC. Since the alternative would have been a defective RAM, I followed the Paid the Beak instructions and managed to get into the minute menu. That's why I assume that it really is an SLC problem and that the RAM is OK. I wanted to install ISFSHAX there. But then I got an error: Boot1 version unsupported (8296). I downloaded the latest version directly from the ISFSHAX website, so I couldn't explain it. But since I have an SLC backup, I continued and was able to install ISFSHAX. I followed the instructions from this forum and wanted to boot into the OS, as the next step in the instructions would be. However, this ends with Jumping to IOS.... Go Go Go. Does anyone know why this is happening? Before installing ISFSHAX, you should make an SLC backup. I did this, but it took several attempts and threw up various errors, such as timeout. Could this have something to do with it? I have a second intact Wii U with Aurora, from which I have the complete Nand backup, as well as several Picos, micro SD cards, and USB sticks.

I hope someone here can help me. I feel like I'm actually done and just one small thing is missing. Unfortunately, I couldn't find anything when I googled it.

 

[SDIO]

ISFShax is only tested against the latest boot1, so that is what is supported. There are a few other versions which work and some that don't (somewhere I posted them). It's just luck where the relevant variable ends up in memory for each boot1 version. We are lucky that it works on the latest boot1.

Since your boot1 is so outdated, your fw.img is probably too. What does happen if you try the patch ISFShax option?

Also can you check your SLC dump with nandBinCheck?

 

[Joel165]

Thanks for your reply. I think you mean Patch ISFSHAX and Boot IOS(slc), right? That's where the error "Failed to load IOS with ISFSHAX Patch" occurs. As for the backup: I've never done the readout before. I'll take a look at it and then post it here.

Post automatically merged: Nov 19, 2025

It looks like no backup was saved. I only have a seeprom.bin and a seeprom_decrypted.bin. Or are those the files? Sorry, but I've never really worked with NAND backups before. I've always just created them in the hope that I'd never need them.

 

[SDIO]

You need to dump the SLC in the backup and restore menu. Your fw.img is probably corrupted y which causes the blue blinking and minute also can't load it, because it is corrupted. Loading it from SD and reinstalling the OSv10 should fix the problem

 

[Joel165]

Thanks a lot. How exactly do I do that?

 

[SDIO]

S

Tutorial  Post in thread 'How To: Upgrading / Rebuilding Wii U Internal Memory (MLC)'

Mar 24, 2024

The problem is that your firmware is too old @SAKyle .

So use JNUSTool to download the latest OSv10. For JNUSTool to work, you need to put the Wii U common key in the config file. You can extract the common key from your otp.bin using this tool: https://github.com/GaryOderNichts/WiiUCommonKeyExtractor/releases

java -jar JNUSTool.jar 000500101000400A

Rename the fw.img from the OSv10 to ios_orig.img and put it on the SD card.

Also make sure to download the SLC titles using the MLCRestoerDownloader and to put them also in the wafel_install folder together with the...

• SDIO

 

[Joel165]

Thanks. I followed your instructions and received the following key: , but now I'm getting an error saying “commonkey length wrong.” Did I extract the right thing? Do I need to leave anything out of the key?

 

[SDIO]

You shouldn't post the key online. Make sure you don't have trailing white spaces or something like that

 

[Joel165]

Sorry, I didn't know. Is it for licensing reasons or something? I thought it was unique, so it wouldn't benefit anyone anyway. I forgot to delete a square bracket. Now I have the folder, renamed the fw.img file, and copied it to a new micro SD card. I also downloaded the MLC and SLC folders from MLCRestorer Downloader. What do I do now? Do I also need the wafel_install folder from the instructions and copy everything into it? Or do I just need this fw file that is defective?

 

[SDIO]

For now just try booting the ios_orig.img without installing any titles.

 

[Joel165]

Same problem again when jumping to iOS... go go go stand. But this time the drive sounded like it had restarted. But I have other files like ios.img etc. on the SD card. Should I delete everything and only keep the ios_orig.img file on the SD card?

Post automatically merged: Nov 20, 2025

I chose the fourth option. Patch(sd) and boot sdmc:/ios_orig.img. Or should I have chosen a different one?

 

[SDIO]

No that is the correct one.
Then let's see in which state your SLC is by running nandBinCheck on the SLC.RAW.
Also dump the sys crash logs

 

[Joel165]

I've never done anything like this before. Are there instructions for this here in the forum?

 

[Joel165]

I managed to do it. I don't know if I can post everything that Nand dumer showed me, so for now, here are the lines that I think are most interesting for the next steps:
Boot1 OK!
found 0 lost clusters
0 out of 837632 pages had incorrect ecc.
“fw.img” is 77b200 bytes ( 1df ) clusters
bad HMAC for “/sys/title/00050010/10004009/code/fw.img”
hmac bad (1)
“scfm.img” is 8004000 bytes ( 2001 ) clusters
bad HMAC for “/scfm.img”
2 files had bad HMAC data
checking HMAC for superclusters...
hmac bad (3)
1 superClusters had bad HMAC data
(32400)

 

[SDIO]

Ok the fw.img is bad as expected. SCFM having bad hmac is normal.
Try reinstalling the OSv10 using the wafel install plugin.

S

Post in thread 'Wii U blinking blue light, no image'

Oct 2, 2023

You find the logs in /sys/log. But I don't think they will help us.
Looking at your system.xml your Wii U still boots the OSv9, meaning you are on a very old FIrmware, 1.0 or something like that.
From the bincheck we saw that the fw.img of the OSv9 is damaged. That's why you get the blue blinking LED. boot1 wants to load the fw.img but fails.

We will reinstall OSv9 to fix that error, for that we download it using JNUSTool:

java -jar JNUSTool.jar 0005001010004009 -dlEncrypted

That will produce a tmp_0005001010004009 folder. Create wafel_install folder on the SD and put the tmp folder...

• SDIO

They reinstall the OSv9. You do the same just with the OSv10

 

[Joel165]

Thanks. Should I use the osv10 folder for the osv9, i.e. the one I already downloaded and just copied and renamed the fw.img, and then also put the renamed fw.img on the SD card, or just the renamed fw.img and the waffel_install.ipx?

 

[SDIO]

You need to download it again encrypted for the install

 

[Joel165]

I have a Wii U logo. But after the Wii U logo, it doesn't seem to go any further.

Post automatically merged: Nov 22, 2025

I did a little Googling. Does this really indicate a corrupt or defective MLC? So that, in the worst case, I would have to install a NAND aid?

 

[SDIO]

What does the water install log on the SD say? Was the install successful?
Once installed you should remove the install plugin and boot without it

 

[Joel165]

I chose the fourth option again with patch SD and installed ios_orig.img. Then it jumped to ios go go go again. After that, the LED flashed blue and I turned off the Wii U when the flashing stopped. Then I removed the SD card and pressed the power button. It flashed blue, then orange briefly, and then stayed blue. It may be my imagination, but I have the feeling that the LED has a different shade of blue than the standard blue LED on the Wii U.

Post automatically merged: Nov 22, 2025

wafel_setup:
OpenDir;/vol/sdcard/wafel_install;-00000000
OpenMCP;/vol/sdcard/wafel_install;-00000000
InstallInfo;tmp_000500101000400A;-00000000
Install;tmp_000500101000400A;-00000000
Flush;MLC;-00000000
Flush;SLC;-00000000