Dell Wyse 5070 - 3 orange blinks - corrupt BIOS

Learn about the structure of TXE firmware.

OR

  • Dump a firmware with a programmer
  • Compare static bios parts to stock bios and correct where necessary
  • Clean NVRam
  • Flash it back, see if it works

OR

OR

  • Dump a firmware with a programmer
  • Extract the Flash Descriptor from original firmware
  • Extract the DVAR region from original firmware
  • Extract the DevExp1 region from original firmware
  • Put the Flash descriptor in front of a stock bios
  • Put the DecExp1 region at the end of a stock bios
  • Insert the DVAR region at the correct place replacing into the stock bios
  • Clean ME according to [Guide] Clean Dumped Intel Engine (CS)ME/(CS)TXE Regions with Data Initialization
  • Flash it back, see if it works

Not all of your machines may have a firmware error, not all may have the same error. Might be corrupted static bios parts, corrupt ME/TXE, might be corrupted NVRAM, might be defective hardware or a combination of all.

Since there’s not much feedback on earlier threads no general recommendation. Easiest way would theoretically be to dump one machine, create a ‘universal’ stock firmware image with clean ME/TXE and then transfer the machine specific DVAR region for each machine.
Missing here unfortunately the proof of concept.

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