The assessment of the n = 1 intrinsic error field in KSTAR has been revised in three respects. First, a local penetration timing criterion is defined from electron cyclotron emission (ECE) and charge exchange spectroscopy (CES) signatures near the reconstructed q = 2 surface. This timing determines the in-vessel control coil current used as the penetration threshold in the compass scan analysis. Second, the compass scans with the MID and OFFMID coils in 1.8 T L-mode plasmas indicate an intrinsic EF level up to an order of magnitude larger than the 2015 KSTAR reference value, implying that the intrinsic EF can change over extended operation and following hardware modifications. Third, the inferred EF direction is assessed by comparing the MID and OFFMID results in terms of the GPEC overlap field, where the two configurations give nearly the same direction despite their different poloidal spectra. A rotating resonant magnetic perturbation (RMP) experiment provides an additional dynamic check of this direction, with penetration observed near the phase predicted from the static MID scan. The reversed-Bt comparison further constrains the possible source symmetry and is more compatible with a PF related contribution than with a TF dominated contribution, although the specific hardware source is not identified. These results provide an updated EF reference for KSTAR operation and motivate periodic reassessment of the intrinsic EF over the operational lifetime of the device.