PTP Camera Command on IOS - requestSendPTPCommand

I am trying to send PTP commands to a camera (DSLR) on IOS via USB. The PTP command is send, using:
requestSendPTPCommand (from ImageCaptureCore)

The main question is, if I can send PTP commands with IOS?

More information:
The same code/PTP command works fine on OSX.
However, my iPad Mini (iOS 13.6, 17G68) returns the Error Message:
'The operation couldn’t be completed. (com.apple.ImageCaptureCore error -21249.)'

The message translates to: ICReturnPTPNotAuthorizedToSendCommand
(https://developer.apple.com/documentation/imagecapturecore/icreturnptpdeviceerrorcode/icreturnptpnotauthorizedtosendcommand?language=objc)

Another post describes my problem quite well:
http://www.openradar.me/FB7593726

best regards

same question with you....

Working on similar task but no luck yet, could you please share if you have resolved this?

PTP Camera Command on IOS - requestSendPTPCommand
 
 
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