Korhex – direct MCU access for ECU programming

Direct to the core. Unlock the MCU.

What is Korhex

The FLEX add-on for direct MCU access

Korhex extends your FLEX ECU-/TCU programmer with a defined microcontroller contact point. The hardware works with guided boot-glitch procedures in FLEX for accessing supported protected control units.

One contact point.
Less manual work.

Opening a protected control unit used to mean flipping the board, desoldering resistors, and manually wiring boot pins—each step takes bench time and increases the risk of board damage. On supported procedures, Korhex replaces this manual work with a single, defined MCU contact point.

Extended access

New access and unlock options for supported control units.

No desoldering

No resistors to remove, no unnecessary hardware changes.

No pin wiring

In supported procedures, the boot pin does not need to be connected by hand.

No board flipping

The required MCU point is reached without turning the ECU board over.

The Korhex approach

More options
directly at the control unit

Hardware that makes the difference: Korhex complements FLEX where direct microcontroller contact is required.

You position the hardware with the matching mask and then continue in the guided FLEX procedure. Which access methods are available is determined by the ECU protocol in use.

Korhex with FLEX and boot-glitch accessories

Guided flow

How Korhex works

In three steps to access: preparation, unlock, and programming all remain in your FLEX workflow. Always follow the guide for the specific control unit.

Attach and position

Prepare the control unit according to the FLEX-guided procedure and place Korhex on the intended MCU contact point using the dedicated masks.

Access and unlock

Run the required access and unlock operation on the supported control unit without desoldering or manual boot-pin wiring, where the procedure allows.

Program

Continue with the familiar FLEX programming flow directly. The process is fully integrated into your existing FLEX workflow.

Technical specifications – reference

Operation mode	Boot Glitch
Compatible FLEX configurations	Full Master / Full Slave, or FLEX with matching Boot-Glitch license
Required license	Matching full configuration or Boot Glitch FLS0.20M/S, depending on the supported protocol
Vehicle & MCU coverage	View current vehicle list →
Operations	Read/write Internal Flash, read/write Internal EEPROM, full backup, boot unlock – protocol dependent
Software environment	FLEX
Package contents	Korhex hardware with dedicated masks for MCU contact positioning; software depends on selected variant

Ready for direct MCU access?

Choose the Korhex variant for your current FLEX configuration or get purchase advice first.

Buy now Supported applications

Technology and coverage

For demanding ECU work

Korhex complements FLEX boot-glitch functionality with hardware for direct MCU contact. Coverage is continuously expanded through FLEX releases.

Direct MCU access

Direct interaction at the required MCU contact point of supported control units.

Boot-Glitch technology

Advanced unlock procedures for protected control units.

New MCU generations

Designed for the ongoing evolution of modern automotive microcontrollers.

FLEX integration

Dedicated procedures and guided flows in the FLEX ecosystem.

Simplified workflow

Less physical setup, simpler bench operations.

Growing coverage

A platform for ongoing protocol and application development.

Korhex + FLEX

One system.
Your familiar workflow.

Korhex is not a standalone programmer. The hardware complements your FLEX setup for supported MCU access and ECU unlock procedures.

Your FLEX software and login
Guided procedures in your existing workflow
Updates and technical support in the FLEX ecosystem

Supported applications

Buy Korhex

Which setup fits your FLEX configuration?

FLEX and Korhex package for new customers

New FLEX customer

Matching bundle with FLEX, Korhex, and software

Starting fresh with FLEX? We help you put together the required FLEX hardware, Korhex hardware with dedicated MCU masks, and the software license that matches your use case.

Custom quote

Ask about bundle via WhatsApp

FLEX Full customer

Korhex hardware

Korhex hardware with dedicated MCU masks for FLEX Full Master or Full Slave with an active subscription. Which procedures are available for your control unit depends on the current FLEX Vehicle List and the respective FLEX procedure.

2.368,10 €

including VAT

Buy now

Korhex hardware and FLEX Boot Glitch software license

FLEX customer without full license

Korhex hardware and Boot Glitch license

For existing FLEX customers without a full configuration: Korhex hardware with dedicated MCU masks together with the FLEX Boot Glitch license FLS0.20M/S for supported Korhex procedures. Personal setup consultation from Stefanel Performance is included.

3.677,10 €

including VAT

Buy now

FAQ

Common Korhex questions

What is Korhex?

Korhex is a hardware expansion for the Magicmotorsport FLEX ECU-/TCU programmer. On supported procedures, it enables direct access to a defined microcontroller contact point, for example for ECU unlock workflows.

What is Korhex used for?

Korhex is used in supported advanced ECU access procedures where FLEX must interact directly with the microcontroller. Depending on the control unit and FLEX protocol, these include boot glitch and other unlock procedures.

Is Korhex an ECU programmer?

No. Korhex does not program control units on its own. FLEX runs the supported procedure and then performs the available read and write operations.

Can Korhex be used without FLEX?

No. Korhex was designed as an extension for the FLEX ecosystem and only works with the procedures intended for FLEX software.

How does Korhex access the microcontroller?

Korhex is positioned with the matching mask on the contact point defined by the relevant FLEX procedure. There, the hardware provides the required connection for the supported access or unlock operation.

Do resistors need to be desoldered for Korhex?

For supported procedures with direct MCU contact, Korhex is designed to avoid resistor removal, board flipping, and manual boot-pin wiring. The exact FLEX procedure always remains the definitive guidance.

Which control units are compatible with Korhex?

Compatibility depends on the control unit, microcontroller, and available FLEX protocol. Therefore check the current FLEX Vehicle List and the procedure stored in FLEX for that specific control unit before use.

Which FLEX license is required?

FLEX Full Master and Full Slave customers use the supported procedures included in their active software configuration. Without full configuration, the FLEX Boot Glitch license FLS0.20M/S is required for supported Korhex procedures. We can review the right setup with you.

Which Korhex variant should I choose?

As a FLEX Full customer with active subscription you need Korhex hardware. For an existing FLEX without full configuration, hardware is available together with the Boot Glitch license. If you are new to FLEX, we can build the right package with you from FLEX hardware, Korhex hardware, and software license.

Will more control units and protocols be added?

Magicmotorsport continues to develop the Korhex platform and FLEX coverage. The current FLEX Vehicle List shows which applications are available; future support cannot be inferred from it.