Hacking Need help with Wii U (blue light blinking)

[_Idk_]

Hey everyone,
My Wii U won’t turn on it only shows a blinking blue light. Before this happened, I installed a Wii game via FTP and used a rubber band on the Wii U GamePad sticks to prevent the console from turning off. After the installation was finished, I tried starting USB Loader GX from the Wii U menu, but it showed an error. I rebooted the Wii U, and since then, it won’t boot just the blinking blue light.
Here’s what I’ve tried so far:

Booting the Wii U without an SD card.

Unplugging the Wii U from power and trying again.

Recently, I found otp.bin and seeprom.bin in a “Backups” folder on my SD card. Unfortunately, I never made a full NAND backup.
I used an up-to-date version of aroma but i also have tiramisu on it but idk what version.
And i have a custom theme on the Wii U, idk if it’s necessary.
Is there any hope to fix my Wii U and make it work again? I’d appreciate any advice or help!

 

[SDIO]

Either you messed up something on the SLC or the DRAM went bad.

You need to defuse and then you will see which one it is

 

[_Idk_]

Either you messed up something on the SLC or the DRAM went bad.

You need to defuse and then you will see which one it is

Thanks for the reply! I’ve never worked with defusing or analyzing the NAND before. Could you please point me to a guide or tools I could use to check if the issue is with the SLC or DRAM?If it’s the DRAM, would that require a hardware-level repair? Any help is greatly appreciated!

 

[SDIO]

https://consolemods.org/wiki/WiiU:De_Fuse