As of August 24th 2026 a new version of ProECU is set for release with a range of important updates. For most users the changes will be seamless but there are some important changes that need to be understood, especially for tuners with multiple dongles or tuners sending files to subdealers and end users.

• New version of ProECU updated to support firmware and file format updates

• Updated .rom file format, now used by all ecu types, no more .bin files

• Updated RaceROM patches for most ECU types

• Updated stock rom files, old .bin files replaced by .rom files, and existing .rom files updated

• New updated EVI (Ecutek Vehicle Interface) firmware for both USB and BT units

• New updated EBP (EcuTek bench Programmer) firmware

• Original Green CANbus cable (made by Sense Solutions) no longer supported for any programming

• New versions of ProECU will only program with updated interface firmware

• New interface firmware will only work with new versions of ProECU

• The new version of ProECU will not run on virtual machines on a PC or Apple Mac (both Intel and Apple Silicon)

• The new version of ProECU will not run if it detects software engineering tools are running, such as Visual Studio, Delphi, IDA etc.

• Some updates are required to support new, as yet unreleased platforms

• Some updates are required for future EcuTek cloud functionality

• File format updates improvs flexibility on older platforms still using the .bin format

• Moving older platforms to the newer format saves significant disc space

• The whole package of updates gives EcuTek more flexibility in future for storing additional info in .rom files

• Updates to ProECU required to accommodate the various under-the-hood changes were significant, making it a one-way change that also requires hardware updates (via firmware updates).

• Update your ProECU as normal with EcuTek Update from the help menu in ProECU.

• Your updated ProECU will require the EVI firmware to be updated prior to flashing an ECU (with the exception of 99-00 Subaru, 01-04 Subaru and Mitsubishi Evo 5-9 that continue to use their specific black interface cables).

• If you have multiple dongles, subdealers or retail customers, be aware that files created with the new ProECU will not be usable on older versions of ProECU. You will need to make sure your sub-dealers and retail customers have updated their copy of ProECU if you are sending them files made with the new ProECU and or their ECU Connect Interface firmware.

• If you use a primary dongle for editing new rom files and additional dongles for programming in the workshop and other sites, or, if you send files to sub-dealers or retail users, all those other installations of ProECU will also need updating.

• Once updated, it will also only work with the latest EVI firmware, so we recommend updating all your active EVI devices.

• We recommend taking time out to do a planned update of ProECU for on-site dongles and interfaces, and then advise any customers you plan on sending new tuned rom files.

• If you get a new .rom file from your tuner saved with the updated ProECU, you will also need to update your ProECU and the Interface firmware.

• Update your ProECU using EcuTek Update from the help menu, click on “Update Software” in the Ecutek Update dialog box.

• Update your EVI firmware from the Hardware pulldown menu in ProECU, select “Interface Firmware Update”.

• If you get a new flash file from your tuner that was created using the latest version of ProECU, you will need to update the firmware of your EVI-BT before being able to flash it. You will need a main firmware version of 5.0 or later, and you can follow the EVI-BT firmware update guide: Updating your ECU Connect Vehicle Interface

• I get an “Unsupported Driver” error when starting ProECU and it shuts down

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  • Your DESkey drivers are out of date and need to be updated by downloading from here: https://download.ecutek.com/dk2-setup.exe

• I get a “Range Check Error” on startup followed by pop-ups filled with garbage text

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  • Your DESkey drivers are out of date and need to be updated by downloading from here: https://download.ecutek.com/dk2-setup.exe

  • Your version of ProECU runs into an issue when checking specific versions of the DESkey driver, your ProECU should also be updated, run your existing Appdownloader to update ProECU and drivers in one step: https://download.ecutek.com/AppDownloaderSetup.exe

• What will happen to my library of tuned ROMs?

  • Nothing, they will still be useable, however you may wish to save them in the updated format to improve security

• I saw my EVI firmware was out of date, however after updating I can no longer program an ECU.

  • The updated EVI firmware will only work with the latest versions of ProECU, you will need to update ProECU using Ecutek Update.

• I’ve updated my version of ProECU and created a new tuned rom, why can’t I program the car with the new rom?

  • The new version of ProECU will need the EVI firmware updating. Select “Interface Firmware Update” from the main ProECU pulldown

• Do I need to update all my stock ROMs?

  • You don’t need to, as ProECU will still open older formats, but as new roms are added for support on older platforms, they will all be in the new format.

• I use a bFlash device for unlocking some ECUs, will that need updating?

  • No, the bFlash will not need updating

• I use an Ecutek Bench programmer for unlocking some ECUs, will that need updating?

  • Yes it will require a minimum firmware version of 2.0

• Will my PhoneFlash users be affected

  • Yes, new files uploaded to EcuTek Cloud will require an EVI BT firmware update before they can be programmed you can direct them to the info on updating their interface here: Updating your ECU Connect Vehicle Interface

  • Existing flash files will still work and they don’t need to be re-uploaded

• Will I still be able to run the updated ProECU on my Mac via VMWare, Parallels or Bootcamp?

  • No. The updated version of ProECU will not run on a Mac