Updating boot1 to install isfshax

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?
 

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