Here's a summary of everything collected for your ECU:
- Vehicle: Honda City 2014 GCC, CVT
- ECU part number: 37820-55A-Y73
- ROM ID: G387-100883
- MCU: Renesas SH7058 (Keihin)
- Calibration: KEIHIN/CYG1-400000
- Checksum: 47C6
- File size: 524288 bytes (512 KB)
- Sticker codes: YU, AYU
- Read tool: Scanmatik / PCMFlash, OBD, Flash memory
Important points:
1) If you already did a successful full OBD read via PCMFlash (512 KB), that
is your original file — save it as your backup. That's the "full bin."
2) If you're asking because the ECU is bricked or corrupted and you need a
donor original to restore, you need a .bin from the
exact same calibration ID (37820-55A-Y73) and ideally the same ROM ID (G387-100883). That can only come from another unit with matching IDs or a Honda dealer calibration database — it can't be generated here.
3) If you have a read but suspect it's bad — post the file or a screenshot of the hex header (first 256 bytes) and we can check if the read looks valid (correct header, no blank areas, checksum match).
What exactly is your situation?
- Did you already read the ECU successfully and want to verify the file?
- Is the ECU bricked/not starting and you need a clean file to flash back?
- Are you looking for a stock file to compare against a modified one?
Without knowing this, nobody can help further.