Difficulties de_fusing a dead Wii U, error code 'a1' ?

[Deleted member 732539]

Hello !

I am posting here as a newbie because I have some difficulties de_fusing my dead Wii U.

I originally decided to de_fuse it, due to a consistent blue light, no video output and not being able to use UDPIH blindly.
According to the Ultimate Troubleshooting Guide, it all points to an early OS Crash.

After soldering and setting everything up with de_fuse, I am not able to access the minute menu using the Pico USB serial.

The logs are consistently the same with :

01
02
03
04
05
08
09
0a
0b
0c
0d
0e
0f
13
14
15
18
19
1a
1b
1c
1d
1e
1f
20
a1
01
00
00

The full logs are attached.
I have the same results with at least two or three SD Card (1 or 2Gb, non-SDHC and non-SDXC).

I see the '1e 1f' so I think the SD card is being read but the 'a1' error code puzzles me. What is the meaning of this error code?
Did I mess (well most certainly) something ?

Another thing that worries me now is that, while not powering up the Pico, the Wii U now throws me a blinking blue light instead of the constant blue light I originally faced.

Thanks !

 

[SDIO]

check the soldering on the debug port

 

[Deleted member 732539]

Hi and thanks SDIO for your answer.

I rechecked the soldering (fully did it again actually, using shorter wires and controlling the continuity between the motherboard and the Pico), but I still have the exaxt same logs when using defuse.