Hi everyone,
My name is Alex and I'm an independent ECU technician based in Hungary. Most of my work involves repairing and restoring imported US-spec Hyundai and Kia vehicles.
Right now I'm working on a 2017 Hyundai Sonata 2.4 GDI (Theta II) with a Continental SIM2K-250 ECU.

ECU information:
A2C1217670001
39101-2GGL8

Current software:
Calibration ID: LFAHNS4ERC3K
Supplier SW: 606C3K10
Program SW: 606C3K51

I also managed to obtain what appears to be the original factory calibration:

LFAHNS4ERC0B
Supplier SW: 606C0010
Program SW: 606C0051

I already have complete full flash BIN files for both ERC0B and ERC3K and professional bench programming equipment, so I'm not looking for a tune or an immobilizer solution.
The reason I'm asking is that according to the VIN history, this vehicle appears to have another open Hyundai service campaign from late 2025, which makes me think there may be an even newer dealer calibration available after ERC3K.

The engine itself is quiet, there is no rod knock, no permanent P1326, and the fault only appears occasionally under heavy load in hot weather.
I'm simply trying to identify the latest available OEM calibration for this ECU.
If anyone has access to Hyundai GDS, dealer software information, calibration databases, or has worked on one of these recently, could you please check what the latest Calibration ID should be for ECU 39101-2GGL8?
Even knowing the latest calibration number would help a lot.
If needed, I can also provide hardware information or compare calibration files.
Thanks in advance for any help.