u/NoCurrency8831

MIB3 SEAT/CUPRA MOI3_EU_SE_R9400L_MU1940_575919360AN – Stuck in Red Menu after firmware update
▲ 6 r/SeatLeon+1 crossposts

MIB3 SEAT/CUPRA MOI3_EU_SE_R9400L_MU1940_575919360AN – Stuck in Red Menu after firmware update

I hope someone here can help me with a MIB3 LG issue.

I was in the process of updating my infotainment unit from:

MOI3_EU_SE_R7800L

to:

MOI3_EU_SE_R9400L_MU1940_575919360AN

This is my first time updating one of these units, but before starting I spent around 50 hours learning about the system through YouTube, Reddit, forums, and other sources, so I tried to understand the process properly before attempting the update.

Unfortunately, when I reached the actual update process, it started failing on some of the files, and now the unit is stuck in the Red Menu.

I am now unsure what the correct next step is.

I have tried searching for a solution, but I cannot find anyone with exactly the same issue.

I would like to ask people with MIB3 experience:

  1. Has anyone experienced errors while installing:

MOI3_EU_SE_R9400L_MU1940_575919360AN.7z

from MIBSolution?

  1. Is there a way to recover the unit from Red Menu using a correct firmware package?
  2. Is the problem caused by the firmware file itself, or should I have followed a different update path/version sequence first?

I understand that I may have missed something, but I really tried to prepare myself before doing the update.

Right now, I am honestly very frustrated because I managed to get this far, and now I am stuck without knowing how to move forward.

Unit information:

  • SEAT/CUPRA MIB3 LG (MOI3)
  • Starting firmware: MOI3_EU_SE_R7800L
  • Update attempt: MOI3_EU_SE_R9400L_MU1940_575919360AN
  • Current status: Stuck in Red Menu

I would really appreciate any help from someone who has experience recovering a MIB3 unit from this situation.

Thank you in advance.

u/NoCurrency8831 — 13 days ago