MagicMotorsport Flex ECU and TCU Programmer

MagicMotorsport Flex ECU and TCU Programmer

MagicMotorsport Flex is a professional programmer that reads and writes the software of engine control units (ECU) and automatic transmission control units (TCU). It is made in Italy by Magic Engineering S.r.l. and reaches the control unit in three ways: through the vehicle's OBD socket, on the bench with the unit removed and powered on the desk, and in boot mode with the processor started in its bootloader. Besides writing tuning files, the same tool is used for ECU repair, cloning, software recovery and unit replacement. Flex works on the unit after the diagnosis; reading fault codes and live data is the job of a diagnostic scanner.

What Is Flex?

Flex reads the software inside a control unit, writes the modified version back, and supplies the power and communication the unit needs while it does so. Two parts come in the box and work together:

• Flex programmer (FLX1.1) — the main unit between the computer and the vehicle or ECU. It runs the communication protocols.
• Flexbox module (FLX1.9) — a second layer that plugs onto the programmer. It supplies voltage, timing signals and pin connections to units on the bench; bench and boot work depends on it.

The Flex software on the computer is web-based and runs on Windows 10 and later. Which units the tool can open is decided by the software licence you buy, not by the hardware. That is what sets Flex apart from single-price competitors: you buy only the licence you need and add others as your work grows.

What Flex Is Used For

Flex Master and Slave: What Is the Difference?

Every licence comes in two versions, and the difference is about rights before it is about price. Which one you need depends on who prepares the files. The hardware is the same for both.

How Flex Master works

The Master version gives you the file read from the unit in plain form and as a .bin, editable with any software. You prepare the file yourself and write it back. A Master user receives 300 Green Coins a month for the manufacturer's file services and gets full technical support directly from the manufacturer. To connect Slave users to your account you also need the MAGP0.1.1.2 file decrypting module on the Master account: a one-off add-on that allows up to 99 Slaves.

How Flex Slave works

The Slave version is considerably cheaper. The file it reads is encrypted: you cannot open or edit it, you send it to the Master you are linked to, and Flex writes the prepared file once it comes back. A Slave is linked to a Master at activation, when you enter the Master's e-mail address or Flex serial number. You can choose the Master yourself, or the manufacturer can recommend one for your region. Slave support goes through the Master first.

Can a Slave be upgraded to Master?

Yes. You pay the price difference between your Slave package and the matching Master package; the hardware stays the same. The manufacturer first needs the release from your current Master, given in writing by e-mail or through a sales ticket that quotes the Slave's serial number. A Slave with an active subscription can also change Master, free of charge, once the current Master authorises it in writing. In practice most workshops start as Slave and move to Master as volume and experience grow.

Flex Licences: What Each One Opens

The manufacturer's catalogue has 14 licence packages; each is sold as Master and as Slave, which makes 28 options. All of them are in the selection box at the top of this page with current prices, and the box adds up the total. The codes are the manufacturer's own product codes; quoting the code when you order speeds things up.

Flex Price: Hardware, Master and Slave Licences

The price of Flex has two parts: the hardware kit and at least one licence. The hardware does not work without a licence, so the figure worth comparing is the sum. The table below uses the same calculation as the selection box at the top of the page: the manufacturer's euro list price, converted at the day's rate, with VAT. It updates by itself when the rate changes.

• Entry setup: hardware plus one processor-family licence (Slave). The most economical start for a workshop focused on one group of units.
• Common setup: hardware plus ECU OBD/Bench Slave. Covers most everyday work.
• Full setup: hardware plus Full Flex Slave. Every module open, files come from outside.
• Independent setup: hardware plus Full Flex Master. Every module open, you prepare the files yourself.

If you are not sure which setup fits you, describe how you work in your order request: which vehicles you handle, whether you prepare files yourself, whether you do gearbox work. We will choose the licence with you; steering anyone to a pricier package than they need helps nobody.

Supported Processor Families and ECUs

What Flex covers depends on the licences you buy. Together, the hardware, the adapters in the kit and the licences work with these families:

• Infineon TC17xx
• Infineon TC2xx
• Infineon TC3xx
• Bosch MDG1
• Bosch MD1 / MG1
• Bosch EDC / MEDC17
• Bosch EMS
• Motorola MPC5xx
• NXP MPC5xxx (Nexus)
• NXP MPC5566
• ST SPC58 / SPC58N
• ST SPC5777
• ST ST10F2xx
• Renesas SH7xxxx
• NEC 76F00xx
• Siemens C165 / 166 / 167
• Delphi ETC3
• Denso
• Continental
• Marelli IAW
• Cummins

A family appearing here does not mean every unit in it is supported for every job: support is defined unit by unit and grows with software updates. The manufacturer publishes the current Flex vehicle list and the list of duplicable ECUs and TCUs on its own site. To ask us about a specific unit, send the number printed on it (for Bosch, the one starting with 0281…) and we will check it with you.

New-Generation MDG1 ECUs: Flex's Own Boot Glitch and Korhex

Carmakers have locked down engine units heavily in recent years. The Bosch MDG1 family is the most common example: classic boot on these units meant soldering on the board, removing resistors or wiring the boot pin by hand. It took time and put the board at risk.

Flex 8.0.0.0 (29 June 2026) changed that. Flex now performs Boot Glitch on most Bosch MDG1 units with TC2xx processors without Korhex, using the FLX4.1 port E adapter that is in the kit; units from VAG, BMW, Stellantis, Kia/Hyundai and Jaguar Land Rover are included. Connecting takes from 10 seconds to 25 minutes depending on the unit, and version 8.5.0.0 added a connection check (Bridge Test) for FLX4.1. The unit is opened for the glitch. Some MDG1 units no longer need a glitch at all and are worked on without opening: BMW and Mini MDG1 on the bench through the pinout (8.12, with FLS0.1, FLS0.10 or FLS0.5), and the BMW MG1CS003 with its SPC5777M processor on the bench (8.21).

Korhex is the add-on hardware for processor families Flex's own glitch does not reach. Released on 8 September 2026, it uses EMFI (electromagnetic fault injection) and is placed on a defined contact point of the microcontroller. The unit is opened, but no soldering, resistor removal or boot wiring is needed. SPC5777, SPC58 / SPC58N, MPC5566 and some TC29x units are opened this way:

Operations with Korhex: internal flash read, write and checksum; internal EEPROM read and write; full backup and boot unlock. Times vary by unit: connection and glitch about 10 to 40 seconds, reading about 2 to 2.5 minutes.

Korhex is a separate product and does not work without Flex. Details and the current price are on the Korhex Boot Glitch and MCU Access Tool page.

OBD, Bench and Boot: Which Method, When?

Flex has three basic ways in, and choosing the right one decides both the time and the risk.

OBD

Reading and writing through the vehicle's OBD socket without removing the unit. It is the fastest and least risky route; if the unit allows it, OBD should always come first. Two vehicle cables come in the box: FLX2.10 (red) for CAN and K-Line, and FLX2.11 (green) for vehicles that communicate over ENet. Trucks and buses also need the FLX2.65 cable.

Bench

The unit is removed and powered on the desk through its own connector, without opening the case. It is used for units closed over OBD or risky to write that way. The Flexbox module and the FLX4.1 port E adapter connect to the unit's pins without soldering, together with the FLK35 colour-coded cable set. The FLX2.14 cable in the box lets you pick one of the Flexbox's four operating modes through the unit's OBD port.

Boot

The processor is started in its bootloader to reach the memory directly. Classic boot usually means opening the unit and making a contact or solder connection on the board; on locked, updated or corrupted units it is often the only way in. On new protected units Boot Glitch takes over: the unit is opened, but no soldering or boot wiring is needed.

How to Use Flex: Setup, Activation and First Read

Flex licences are activated against your account with the manufacturer, not stored in the tool, so setup starts with the account rather than the software. The manufacturer's flow is:

1. Create an account. Open a MagicMotorsport Magic Center account or log in to an existing one. Since September 2026 the helpdesk sits inside Magic Center; on the first login with an older account you are asked to set a new password.
2. Activate the tool. In product activation, add a new product and enter the Flex serial number. A Master can start right away; a Slave enters the e-mail address or Flex serial number of the Master it will be linked to. The software licence is activated after the hardware has reached you.
3. Install the software. The Flex installer is downloaded from the manufacturer's site and runs on Windows 10 and later. Installing the drivers is a separate step, with an official video from the manufacturer.
4. Find the unit and choose the connection. Search by make and model or by ECU/TCU code; the software lists the connection routes available for that unit. Pick the protocol and method (OBD, bench, boot) and connect.
5. Take a full backup first. Back up the whole content of the unit before reading and writing; that file protects every step after it.
6. Updates arrive by themselves. During the subscription the software downloads and installs updates automatically.

We set up the account, the activation and the software installation with you over a remote connection, and the first-use and ongoing technical support come from us.

Subscription, Updates and Warranty

Does Flex keep working when the subscription ends?

Yes. A software package comes with one year of updates, counted as 365 days from activation. When it ends the tool is not locked: you keep working with the software you have received, and bug fixes for the protocols you own keep coming. What stops are the new things: new protocols, and new functions added to existing protocols, count as new releases.

Three more details are worth knowing. A late renewal is backdated to the day after the expiry date, so no time is gained for free. On an expired account the manufacturer may refuse configuration changes such as adding a licence. Activated licences and subscriptions are not refundable.

How does the Flex warranty work?

The manufacturer gives Flex tools with an active subscription a limited lifetime warranty. If a fault in the FLX1.1 programmer or the FLX1.9 Flexbox is confirmed through a repair ticket, a new interface is supplied and the customer pays only the shipping. The conditions, stated plainly so the second year holds no surprises:

• The lifetime right applies to the original owner for as long as the account with the manufacturer stays active.
• If the subscription stays expired for more than 7 days, the lifetime right is lost and the warranty falls back to 24 months from purchase. A tool that has changed owner also has 24 months.
• Cables, connectors and accessories are wear items and are not covered. A tool with an opened warranty seal, or repaired by anyone other than the manufacturer, is not covered.

The tools we sell are genuine and invoiced; the warranty applies on the manufacturer's terms above. When this page was written the latest release was Flex 8.26.0.0 (19 October 2026); the manufacturer publishes new unit support almost every week.

What Is in the Box?

The hardware kit carries the code FLK02.V02 and, by the manufacturer's list, has fourteen items. First the main parts, then the official parts list:

FLK02.V02

Full kit

The whole box: programmer, Flexbox, OBD and bench cables, adapters, cable set and power supply.

FLX1.1 + FLX1.9

Programmer and Flexbox

The main unit talks to the computer and the vehicle; the Flexbox on top supplies power and pin connections for bench and boot work.

FLK42.V02

Set of 10 pin adapters

Ten adapters used with the FLK35 cable set, including connections for EMS31xx, EDC17C49/C69, EDC7, MDG1 and Cummins CM2150.

FLX4.1

FlexBox port E 40-pin adapter

Solder-free connection to the pins of a unit on the bench, with the FLK35 colour-coded cable set. Since Flex 8.0 the MDG1 Boot Glitch also runs through this adapter.

FLX2.14

Female OBD cable for the Flexbox

Connects the unit's OBD port to the Flexbox through a 44-pin socket; one of four operating modes is chosen for bench programming and diagnostics. It is not the cable that goes to the vehicle.

FLK49

Power supply

Switch-mode power supply (FLX4.9), its cable (FLX4.9.1) and EU, UK and US plugs.

Full parts list

Technical Specifications

Supported Vehicle Brands

Flex coverage is unit-based: if a given engine unit of a brand is supported, the models carrying it are covered. From cars to motorcycles and from trucks to tractors, it works with the common engine and gearbox units of European, Asian and American makers:

• Mercedes-Benz
• BMW / Mini
• Volkswagen
• Audi
• Seat
• Škoda
• Porsche
• Ford
• Opel
• Peugeot
• Citroën
• Fiat
• Alfa Romeo
• Jeep
• Renault
• Dacia
• Volvo
• Land Rover
• Jaguar
• Toyota
• Honda
• Nissan
• Mazda
• Hyundai
• Kia
• Ducati
• KTM
• Husqvarna
• BMW Motorrad
• Triumph
• Mercedes-Benz Truck / Bus
• Iveco
• DAF
• Freightliner
• Kenworth
• JCB
• Kubota
• Cummins

It is always best to confirm support for a specific vehicle or unit before buying. Send the make, model, engine and, if possible, the unit number, and we will check the manufacturer's current vehicle list and get back to you.

Buying a Used Flex: What to Check

Because Flex licences and the subscription run through the account with the manufacturer, the state of that account matters as much as the tool itself when buying second-hand. The manufacturer's terms are clear on this:

• The account does not transfer. The seller notifies the manufacturer of the sale; the buyer opens their own account and accepts the terms for transferring the products in their current configuration. The licences stay with the tool's configuration; the old account does not move.
• A Slave does not leave its Master on its own. Unless the Master releases it in writing, a used Slave stays linked to the previous owner's file provider.
• On an expired account the manufacturer may refuse configuration changes; to add a licence you may first have to renew the subscription.
• The warranty is shorter: a tool that has changed owner has 24 months.

Before paying, send the serial number to the manufacturer and have them confirm the account status, the open licences and the subscription expiry date. We are happy to do this check with you.

How to Tell a Genuine Flex

The Flex software does not work until the tool has been activated with its serial number on an account with the manufacturer, and licences cannot be activated without a genuine Flex. The most reliable check is therefore to have the serial number confirmed by the manufacturer before buying. A tool with an opened warranty seal is not covered, and the manufacturer reserves the right to close accounts where software or licence codes are shared without permission. If you come across tools sold as "Flex" at very different prices, the difference usually lies in the account and the licences rather than the hardware.

Flex or Another Tool?

Two things are compared when choosing an ECU programmer: coverage and the way it works. Because Flex licences are sold separately, the budget can follow the need; anyone wanting the whole range buys it at once with the Full package. The AutoTuner ECU programming and chip tuning tool in our catalogue differs with its single-package structure and its update model without a subscription, while the Alientech KESS3 works with protocol packages and an annual subscription. All three come as Master and Slave.

When comparing, ask three questions: which processor families do you work on, do you prepare files yourself, and what are you willing to pay for updates a year from now. You can also browse all ECU programming tools.

Who It Is For

• Workshops doing chip tuning and performance software
• Electronics services repairing engine and gearbox units
• Services doing unit replacement, cloning and software recovery
• Fleet services working on trucks, buses, construction and agricultural machines (with the FLS0.15 licence)
• Master companies building their own file pool and serving Slave users