Always use Raw XYZ when creating a meter profile, especially when using the Bodner method. You should only ever use an EDR if you do not have access to a Spectro to create a profile, and even then, the OLED EDR is
not for use with WRGB OLED and should never be used on these LG OLEDs
It doesn't matter, all you are doing is displaying 4 patches (RGBW) and measuring them with both meters to create the meter correction. These patches can come from anywhere, such as the iTPG (either one), an external TPG or even a blu-ray disk. There is nothing special about them, they are just 100% RGBW (or 94% when using LightSpace/ColourSpace to prevent clipping).
But for LG OLED there are some extra steps that prove beneficial.
- Set OLED Light to give an output of approximately 100 nits prior to creating the meter correction for best/consistent results. WRGB OLED's are unstable at high luminance, so do not attempt to do it in HDR/DV mode.
- Disable all internal processing/image enhancements/eco modes etc, just as you would if you were performing the calibration.
- Ensure the panel is in its native gamut (Wide) first also. You can do this by either manually selecting wide in the user menu, or by connecting to your TV via DDC and performing a Full DDC Reset. Only do the Full DDC Reset if you plan to use AutoCAL though. If you plan to attempt either skipping the 1D LUT or doing a Manual Calibration, never press the Full DDC Reset button.
Doing the above will correct the full gamut when performing a 3D LUT or HDR/DV calibration (luminance correction will scale). Obviously it is taken for granted that correct meter setup (warm up, placement/alignment) is also done beforehand.