This method has been circulating around since yesterday. Presumably, it was discovered on a Chinese forum.

Using this method allows you to stay connected without DNS blocking, and therefore have complete access to Nintendo services.

There are some concerns floating around about this process. So here is a complete guide detailing the process.

Disclaimer:
The following guide tampers with your NAND. Use this with caution or there is a good chance you'll MESS UP your Wii U for good, or even BRICK!

Requirements:

• A Wii U & SD: Firmware and SD size doesn't matter as long as you satisfy the other conditions
• Mocha Or Haxchi
• HBL on SD card
• ftpiiu_everywhere (Haxchi) on SD card
• Access to HBL: Browserhax, Haxchi/CBHC, or any other form of entry point, are all fine. As long as you access it.
• A PC with FTP Client: Technically it doesn't have to be a PC. It can even be done on your phone with an FTP Client. I'm using the PC for the simplicity of it. FileZilla IS RECOMMENDED.
• Optional: Use Nand Dumper to back up your nand with all it's contents, as well as dumping the OTP and SEEPRPOM. By having those, you can unbrick your system with a hardmod at any point. Dumping MLC will require a 64GB SD card if your Wii U is 32GB, or 16GB SD card if your Wii U is 8GB.

1A) Using Haxchi/CBHC:

1. System Menu: Have Haxchi reboot to System menu.
2. System Menu: Launch HBL via Haxchi or browser.
3. HBL: Launch ftpiiu_everywhere.
4. Proceed to section "2)" of the guide to block updates. Proceed to section "3)" if you want to unblock them again.

1B) Using Mocha:

1. System Menu: Launch HBL via browser.
2. HBL: Start Mocha (Using default values are fine)
3. System Menu: Launch HBL via browser again.
4. HBL: Launch ftpiiu_everywhere.
5. Proceed to section "2)" of the guide to block updates. Proceed to section "3)" if you want to unblock them again.

2) Modifying your Nand, and blocking updates:

1. PC: Use an FTP client to connect to your Wii U using the IP address and port on your Wii U screen.
2. PC: Once connected, Navigate to: "storage_mlc/sys/"
3. PC: Locate "update" folder, right-click it and Pick "File Permissions". Make sure it's the same as the screenshot below. If it's not the same, then make note of that. You will need it if you want to enable updates later. If it's the Same, then proceed to the next Step.
   
4. PC: Delete “update” folder.
5. Wii U: Press "Home" button to get back to HBL, press it again to get back to Mii Maker.
6. Wii U: Exit Mii Maker, and click on system settings.
7. System Settings: Attempt to update your Wii U as Normal. A few seconds after it starts and the progress bar appears, it should give out this error code: 105-3012. If the progress bar actually continues to move, TURN OFF THE WII U IMMEDIATELY!! Recheck your steps, cause something went wrong.

3) Unblocking updates:

If for whatever reason, you would like to return the Wii U to it's original updating state, start by following "1A)" or "1B)" of the guide, then proceed to the next step of this section:

1. PC: Use an FTP client to connect to your Wii U using the IP address and port on your Wii U screen.
2. PC: Once connected, Navigate to: "storage_mlc/sys/"
3. PC: Right-click, and select "Create Directory". Create “update” folder. Once created, right-click again, and select "File Permissions".
4. PC: When you originally did section "2)", if your permissions were the same as the screenshot in that section, enter those same permissions here. If not, then you should have noted them down somewhere. Enter those values instead, then click ok.
5. Wii U: Press "Home" button to get back to HBL, press it again to get back to Mii Maker.
6. Wii U: Exit Mii Maker, and click on system settings.
7. System Settings: Attempt to update your Wii U as Normal. It should proceed to update normally.

Credits:
@fejich for being the first to notify us about a Chinese website doing this method in this thread
@Shaoxudong for translating the process, and testing it.

 

[godreborn]

There’s a 5.5.4? I can’t update after restoring my folder. I had same permissions as screen shot. I can’t use the eshop and I’m stuck on 5.5.3

are you still using dns?

 

[Madridi]

Have you tried using this?
https://github.com/GaryOderNichts/UFDiine/releases/latest

Oh wow I didn’t know about this. I should include it in the main post once I get some time. Better than doing it manually.

are you still using dns?

That’s a good point, and probably the reason behind @blaisedinsd problem.

 

[godreborn]

I had no issues personally, but I recently discovered that you still have to use nnu patcher on latest firmware to enter the eshop, if you're using the dns, or it will error. that's what made me think of that.

 

[blaisedinsd]

I wasn’t blocking with DNS. I even deleted my connection and made a new one to make sure.

UFDiine created the folder for me and it worked fine. Didn’t figure out why the ftp method wasn’t working to restore updates.

 

[Glyptofane]

Oh wow I didn’t know about this. I should include it in the main post once I get some time. Better than doing it manually.

Nor I, but should be the safest, foolproof method now, although I haven't personally tested it to verify.

 

[godreborn]

I redeleted my update folder after recreating it and updating. it might be better than using dns, because you do have to use nnu patcher to access the eshop then.

 

[LucaDark]

i have deleted the update folder, now i want to recreate it but i forgot the proper permissions to set,
how can I do?

 

[godreborn]

i have deleted the update folder, now i want to recreate it but i forgot the proper permissions to set,
how can I do?

755, it's in the op.

 

[WiiU_user]

Very nice tutorial!

 

[Deleted member 577757]

I'm scared if this won't work at 5.5.5 U lol (although i did it rn and my wii u is just fine but since i'm already up to date atm, i couldn't create that 105-3012 error at the system settings.)

 

[flowlapache]

I'm scared if this won't work at 5.5.5 U lol (although i did it rn and my wii u is just fine but since i'm already up to date atm, i couldn't create that 105-3012 error at the system settings.)

are you on 5.5.4U? it's the last so no error. yes it will work for an hypothetic 5.5.5 update

 

[Deleted member 577757]

are you on 5.5.4U?

No i'm already up to date at 5.5.5U, i did that at this exact version

 

[flowlapache]

oops,ok.
so,you'll see this error in few years for the forgotten 6.0.0 update lol!

 

[Deleted member 577757]

good