Unable to Overwrite EXIF DateTime Metadata on iOS

[reyn-flores]

Description:
I am currently encountering an issue where attempting to overwrite the EXIF DateTime metadata of a photo on iOS does not work. The photo still displays its original DateTime values even after using the provided APIs to update these attributes.

I have tried the following code snippets, but none of them successfully updated the DateTime metadata:

await exif.writeAttribute('DateTimeOriginal', "1970:01:01 00:00:00");
await exif.writeAttribute('DateTimeDigitized', "1970:01:01 00:00:00");
await exif.writeAttribute('DateTime', "1970:01:01 00:00:00");
await exif.writeAttribute('kCGImagePropertyExifDateTimeOriginal', "1970:01:01 00:00:00");
await exif.writeAttribute('kCGImagePropertyExifDateTimeDigitized', "1970:01:01 00:00:00");

Other EXIF attributes, such as modifying custom tags, appear to work correctly.

Expected Behavior:
The DateTime fields in the photo's EXIF metadata should update to the new value provided in the code.

Actual Behavior:
The DateTime metadata remains unchanged, displaying the original value.

Context:
The feature I am working on requires ensuring that downloaded photos/videos do not retain their original creation date. Modifying DateTime on iOS is essential for this use case.

Additional Notes:
If this behavior is expected due to platform limitations or if there is a specific workaround, I would greatly appreciate any guidance.