requesttype=0x20

Not used for EOS D30/D60 cameras: use EOS Lock Keys instead. This command is normally issued during camera initialization for a non-EOS camera, as those cameras can't share control between the host computer and the on-camera controls.

We don't know how to reverse this command, i.e. unlock the keys on a non-EOS camera. To regain control of a non-EOS camera, unplug the USB cable.

Command: 0x50 bytes

0000 10 00 00 00 01 02 00 00 00 00 00 00 00 00 00 00 ................
0010 20 46 69 6c 65 73 00 43 4f 4d 50 55 54 45 52 4e Files.COMPUTERN
0020 41 4d 45 3d 52 41 4c 50 48 00 43 6f 6d 53 70 65 AME=RALPH.ComSpe
0030 63 3d 43 3a 5c 57 49 4e 4e 54 5c 73 79 73 74 65 c=C:\WINNT\syste
0040 02 00 00 00 20 00 00 12 10 00 00 00 94 f7 e1 00 .... ...........
        

Reply: 0x54 bytes

0000 14 00 00 00 01 03 00 00 00 00 00 00 00 00 00 00 ................
0010 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 ................
0020 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 ................
0030 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 ................
0000 02 00 00 00 1f 00 00 22 14 00 00 00 94 f7 e1 00 ......."........
0010 00 00 00 00                                     ....