Updating boot1 to install isfshax

  • Thread starter Thread starter ThaKarra
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ThaKarra

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Hi all,

I purchased a Japanese Wii-U from Japan and upon booting it up yesterday, it had an issue where it wouldn't go past the white logo screen.

I had a spare Pi Pico laying around so I decided to wire it up to the motherboard and use de_fuse so I could load the minute menu (which was successful). I later found out that there are better ways of accessing the minute menu now, but since I had already done all the hard work of wiring it up - I decided to stick with it.

From the minute menu I was able to dump; otp, seeprom, slc and slccmpt - which I have now backed up onto my PC.

Thanks to some help from a Discord group I was able to verify from the sys crash logs that my hynix chip is pretty much dying.

I was then advised to install isfshax and redNAND.

I attempted to install isfshax and I got an error that my boot1 version was unsupported (8354). I was then told I need to update my boot1 before I can continue any further.

I've tried to do as much research as possible because I don't know what my next steps should be and I don't want to risk ruining my console. The issue is that I can't find any clear guides online and I'm finding myself trying to piece different tutorials together when in reality I have no clue what I'm doing.

Is there anyone who could possibly help me take this further? Or at least point me in the right direction with a guide or tutorial to follow? I'm quite capable of modding consoles but overall I'm quite new to the world of Wii-U, so please do keep that in mind.

Appreciate any help you throw my way!
 
Last edited by ThaKarra,
This likely means the Wii U system firmware is on a version too low to install ISFSHax. Given you have a Pi Pico, you'll want to rebuild the firmware for the Wii U for a higher version using Stroopwafel and wafel_setup_mlc, and then you can install that firmware through minute menu, hopefully then allowing you to install isfshax and rednand
 
This likely means the Wii U system firmware is on a version too low to install ISFSHax. Given you have a Pi Pico, you'll want to rebuild the firmware for the Wii U for a higher version using Stroopwafel and wafel_setup_mlc, and then you can install that firmware through minute menu, hopefully then allowing you to install isfshax and rednand
Hey thanks for the reply! I absolutely appreciate it :)

Do you have any pointers on where I can get started?
 
You would add the boot1 title to the slc titles in the title.json for the MLC Restorer Downloader, so it gets downloaded together with the SLC titles.
Then you follow the redNAND guide to setup your redNAND. For that use both the MLC and SLC titles and remove the isfshax ios_plugin as that would block the boot1 update. During the redNAND setup your boot1 will then be updated too.
After that finished you can run the ISFShax installer again and it should let you install ISFShax.
 

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