Flex Version 7.5.0.0 is Out Now with Comprehensive Boot Solutions for Old School ECUs
The latest Flex update is dedicated entirely to boot solutions for older ECUs, ensuring support for a range of Old School protocols. With version 7.5.0.0, the vehicle list expands to include 17 new ECUs compatible with bootloader mode, covering major brands like FCA, VAG, and PSA.
Flex now empowers tuners to program engine control units from previous generations, still commonly found on the road. With this update, you can unlock, read, and write these ECUs efficiently and securely.
Supported ECUs
- FCA Marelli IAW 4AF
- Ford Delphi DCU101
- Isuzu Denso 4HK1
- Kia/Hyundai Bosch M7.9.8
- Mercedes Bosch ME2.7.1
- Opel Bosch ME7.6.4
- PSA Bosch ME7.4.9
- PSA Bosch M7.4.4
- PSA Bosch EDC15C7
- PSA Siemens SID804
- PSA Siemens SID801
- Renault Siemens EMS3132
- Toyota Bosch M7.9.5
- Toyota Bosch ME7.9.51
- VAG Marelli IAW 4HV
- VAG Siemens Simos9.1
- VAG Bosch ME7.5.30
Supported Vehicles
- Fiat Fiorino 146 1.3L 60PS
- Opel Astra 1.6L Turbo 192PS
- Toyota Aygo 1.0L 67PS (2005)
- Peugeot Manager 2.8L HDI 128PS (2000)
- Volkswagen Fox 1.6L 105PS (2003)
Newly Added Protocols
- FCA Marelli IAW 4AF: Read/Write/Checksum for Internal Flash, Read/Write External EEPROM, Full Backup
- Ford Delphi DCU101: Read/Write/Checksum for Internal Flash
- Isuzu Denso 4HK1: Read/Write/Checksum for Internal Flash, Read/Write External EEPROM, Full Backup
- Kia/Hyundai Bosch M7.9.8: Read/Write/Checksum for Internal Flash, Read/Write External EEPROM, Full Backup
- Mercedes Bosch ME2.7.1: Read/Write/Checksum for External Flash, Read/Write External EEPROM, Full Backup
- PSA Bosch ME7.4.9: Read/Write/Checksum for Internal Flash, Read/Write External EEPROM, Full Backup
- PSA Siemens SID804: Read/Write/Checksum for External Flash, Read/Write External EEPROM, Full Backup
- Renault Siemens EMS3132: Read/Write/Checksum for External Flash
This update also includes new bug fixes, adding CRC support for Kia/Hyundai Kefico CPEGD3.20.1 OBD. With these enhancements, Flex ensures seamless functionality for both modern ECUs and older units.
Available Software Packages
- FLS0.5M: SW Flex Full Master
- FLS0.5S: SW Flex Full Slave
- FLS0.7M: SW Flex Boot Infineon C165/166/167 Master
- FLS0.7S: SW Flex Boot Infineon C165/166/167 Slave
- FLS0.8M: SW Flex Boot ST10 Master
- FLS0.8S: SW Flex Boot ST10 Slave
Enjoy Boot Solutions for Old School ECUs with the new Flex 7.5.0.0 update and ensure full control over older ECUs for secure and reliable programming.





