Hondata

FlashProManager 4.5.9 (14 October 2025)

• Firmware updated to version 273
• [2022+ Civic Si] Fixed issue causing uploads to fail for 2025 models
• [2015+ S660] Added a warning if locking to a non stock S660

Download here

Please only post in this thread if directly related to the software release.

Hello everyone, I detected 2 small issues in version 4.6.0. All the calibrations I have in the "Tab - Calibration - Calibration - Vehicle" section, whenever I open a calibration, for example, from a 2021 FK8 model, it automatically changes to 2017 as soon as we close it and reopen the calibration. Another issue is that the comparison function often shows everything as blank, not displaying the comparison/differences.

Thanks in advance