820-02016 - No Trackpad / Keyboard - Unable to restore via AC2

[T4H]

Hi,

Im facing keyboard and trackpad issues (no function) on an A2337 (820-02016 / MacBook Air M1).

I have already tried the following:

• Replaced the flex cable (between logic board and trackpad)
• Tried another top case (same issue)
• Replaced UT330, UT355, UT310, UT360 and UT365
  • IPD_SPI_EN_CON = 0.596
  • IPD_SPI_EN = 0.316

Is it normal that "IPD_SPI_EN" is always 0V?

And when it try to restore the MacBook via AC2 (DFU Mode) I get the following error message:

What does AC2 error 16383 mean?