MAGIC FLX2.75 – BootROM Cable for CM2100A

This is a specialized BootROM cable (model FLX2.75) made for working with Cummins CM2100A engine control units (ECUs) — common in Dodge heavy‑duty diesel vehicles.

 Main Purpose

• It provides a stable bench connection between a Cummins CM2100A ECU and the Magicmotorsport Flex programmer.

• Allows direct communication with the ECU hardware, bypassing the normal firmware layer.

  Key Uses

  • Recovery of locked or “bricked” ECUs

  • Full firmware read/write/programming (including if corrupted or incorrect firmware was previously installed)

  • Low‑level access for restoration or advanced tuning tasks

  • Activates BootROM mode via the FLEX “Enable BootROM” function, making bench programming safer and easier.