Korhex – Boot Glitch and MCU Access Tool for Flex

Product Description

WHAT IS KORHEX?

A Flex Add-On for Direct MCU Access

Korhex is a hardware add-on for Flex, designed for direct MCU access during supported ECU unlocking procedures. It works with Flex’s Boot Glitch workflow to simplify access to protected ECUs, reducing the need for board flipping, resistor desoldering and manual Boot pin wiring.

Unlocking a protected ECU usually means physical work before any software step: flipping the PCB, desoldering resistors, wiring Boot pins by hand. Each extra step adds time on the bench and risk of damage to the board. Korhex is built to simplify that stage, a single dedicated MCU contact point instead of manual rework.


Highlights:

• Direct MCU access on supported ECUs

• No component desoldering

• No manual pin connection

• Support for advanced Boot Glitch procedures

• Full integration with the Flex ecosystem

Features:

Deeper ECU Access

Korhex replaces manual bench preparation with a single MCU contact point, run through Flex.

The result isn’t just less prep time, it’s a new way to program control units: a revolutionary connection mode and an advanced access to highly requested, previously unavailable modules.

Boot Glitch Technology

Advanced unlocking procedures developed for protected control units.

New MCU Perspectives

Designed to support the evolution of modern automotive microcontrollers.

Flex Integration

Dedicated procedures and guided workflows built into the Flex ecosystem.

Enhanced Workflow

Reduce physical preparation and simplify complex bench operations.

Growing Coverage

A platform designed for continuous protocol and application development.

Korhex Recent Updates:

Update BRP MG1CA920 SPC58N boot unlocking with Korhex.
Update DAF Delphi ETC3 UDS boot unlocking with Korhex.

How Korhex works?

Korhex has been designed to integrate advanced hardware access directly into the Flex ECU programming workflow. It interacts directly with a specific contact point on the ECU microcontroller to enable the access required by supported advanced programming and unlocking procedures. 

Korhex uses a specific contact point on the microprocessor to perform the access procedures provided for supported devices.

Thanks to Boot Glitch technology and integration with Flex, the workflow requires less preparation and reduces physical handling of the ECU board. 

1. Connect & Position
Prepare the ECU per the Flex-guided procedure and place Korhex on the designated MCU contact point via its dedicated masks.

2. Access & Unlock
Perform the required access and unlocking operation on supported ECUs - no desoldering, no manual Boot pin wiring.

3. Unlock
Run the access and Boot Glitch procedure provided for the supported ECU. 

4. Program
Continue directly in Flex with the standard programming procedure. The workflow is now integrated end-to-end inside the Flex procedure you already use.

Technical Specs

Working mode: Boot Glitch

Compatible Flex configurations:

• Full Master / Full Slave
• Flex Boot Glitch FLS0.20M/FLS0.20S

Operations:

• Read/Write Internal Flash, Read/Write
• Internal EEPROM, Full Backup, Boot Unlock

Software environment: Flex
 

What do you need? Choose your Korhex setup

What you need depends on your current Flex configuration.
 

NEW CUSTOMER

NOT A FLEX CUSTOMER YET?

If you’re not a Flex customer yet, all you need is the Flex Hardware, the Korhex Hardware and a software license to work seamlessly with these two products. [Flex Hardware + Korhex Hardware + Software License]
 

FULL CUSTOMER

ALREADY A FLEX FULL CUSTOMER?

If you already have a Flex Full Master/Full Slave license and an active subscription, there is a special price only for you: buy the Korhex hardware via Helpdesk and start working.
 

FLEX CUSTOMER

NOT A FLEX FULL CUSTOMER YET?

If you’re not a Flex Full user, you can buy the Korhex hardware then upgrade your subscription to a Full license or add the Boot Glitch License FLS0.20 and you’re ready to go. [Korhex Hardware + Flex Software license].


Korhex FAQ

What is Korhex used for?

Korhex is used during supported advanced ECU access procedures where direct interaction with the microcontroller is required. Depending on the ECU and Flex protocol, this can include Boot Glitch and other ECU unlocking procedures.


Is Korhex an ECU programmer?

Korhex is not a standalone ECU programmer. It is a dedicated hardware extension of Flex. Flex manages the supported procedure and subsequent ECU programming operations.


Is Korhex a standalone tool?

No. Korhex has been developed specifically for the Flex ecosystem and operates through dedicated procedures available in the Flex software.


How does Korhex access an ECU microcontroller?

Korhex is positioned on a specific MCU contact point indicated by the corresponding Flex procedure. The hardware enables the required interaction with the microcontroller during supported access or unlocking operations.


Do I need to desolder resistors?

Korhex is designed to avoid resistor desoldering on supported procedures where direct MCU contact can be used instead.


Which ECUs are compatible with Korhex?

Compatibility depends on the ECU, microcontroller and Flex protocol. The list of supported applications is continuously updated through Flex releases and can be checked in the Flex Vehicle List.


Do I need a specific Flex license to use Korhex?

Customers with a Flex Full Master or Full Slave configuration can use Korhex with the procedures included in their software package.

Customers without a Full configuration can purchase the Flex Boot Glitch License FLS0.20M/S to access supported Korhex procedures.


Will new ECUs be added?

Yes. Korhex has been designed as an evolving hardware platform. New supported applications and protocols released through the Flex ecosystem.