Hacking Hardware Project Bricked my Wii U by messing up an SLC folder location with FTPiiU

[Galahad_the_blockhead]

As suggested by the title, I bricked my Wii U while using FTPiiU everywhere, due to messing up the locations of a pair of folders in the SLC while resetting my console serial. Now, I have a NAND backup, but I need advice for what tools and experience are needed to recover this. UDPIH did not work, suggesting that I removed a very early part of the boot order. The console's internal drive spins up, but does not show any screen. The console is not connected to the gamepad due to the aforementioned console serial reset, so I cannot receive feedback from it.
In short, I need to be pointed to the tools and materials to reflash the SLC from close to nothing, because I really do not want to buy another console. Again.

 

[SDIO]

yeah you need to defuse if UDPIH is no longer working
https://github.com/shinyquagsire23/wii_u_modchip/blob/main/pico_defuse/README.md
You don't need to solder 3V3. That is only for permanent defuse, For unbricking it will get power from the PC over USB.

Also you can't just flash the old SLC, because that would mess up SCFM.