Several existing modules received vital refinements in this build: Module 12 (Honda/Acura CAN-bus) : Added support for AT/CVT/DCT (Hitachi SH725x3/2048KB). Module 21 (Ford USA)
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Works seamlessly with various interface devices, including J2534 pass-thru tools. Detailed Breakdown of PCMflash 1.2.1 Update pcmflash 121 upd
Is it a necessary update? A major new feature release? Or a potential trap that could lock you out of your hardware? This guide will peel back the layers on , explaining exactly what it is, whether you should install it, and how to navigate the often misunderstood process of updating this powerful software.
✅ Backup your current PCMflash folder. ✅ Verify your license supports version 121. ✅ Download the full protocol database. ✅ Test the update on a known-good ECU first (e.g., a spare Bosch EDC17). Several existing modules received vital refinements in this
Covers a range of processors, including ST10F275, TC1766, TC1738, SH72549, and MPC562.
(TC1766 & TC1738 Microcontrollers) 🔄 Updated Modules in Version 1.2.1 Version 1.2.1 refined and expanded several legacy packages: Module ID & Name Vehicle Group Newly Supported ECUs / Features Action Support Module 12 (Honda/Acura CAN-bus) Honda / Acura AT/CVT/DCT with Hitachi SH725x3 processors Read / Write / CS Module 21 (Ford USA) Ford / Lincoln Bosch ME9.8 (5.4L Expedition/Navigator) & MEG9.8.1 (F-150) Read / Write / CS Module 22 (Renault) Nissan / Renault Bosch EMS3155 found in Nissan Juke 1.2 Turbo Read / Write / CS Module 24 (Mitsubishi CAN) Mitsubishi Colt RallyArt 1.5T (MH8104F) & L200 2.4L MT (MH8302F) Read / Write / CS Module 29 (Ford PWM) Legacy Ford Ford EEC-V 216K powertrain systems Read / Write / CS Module 38 (Renault K-Line) Older Renault Siemens Sirius 35 engine control systems Read / Write / CS Module 53 (Infineon Tricore BSL) JLR SID208, PSA EDC17C60, PSA MED17.4.4, Delphi CRD3/CRD3P Bootloader Mode Read/Write 🛠 Hardware Prerequisites & Setup If you share with third parties, their policies apply
Read/Write/Checksum correction for automatic transmission controllers. 3. Updates to Existing Modules
Added support for PSA EDC17C60 and MED17.4.4. System Requirements and Hardware