Patch for https://github.com/xslim/mobileDeviceManager to support copying files *from* the device. Insert this at line 75 into Source/main.m.

main.m

} else if ([option isEqualToString:@"copyFrom"]) {
	NSLog(@"Copying...");
	AFCApplicationDirectory *appDir = [device newAFCApplicationDirectory:[arguments stringForKey:@"app"]];
	AFCFileReference *infile = [appDir openForRead:[arguments stringForKey:@"from"]];
	if (!infile) {
		NSLog(@"Error: %@", [appDir lasterror]);
	}
	    
	char buf[0x10000];
	int outfile = open([arguments stringForKey:@"to"].UTF8String, O_CREAT | O_WRONLY, 0777);
	    
	    
	uint32_t len;
	while ((len = [infile readN:sizeof buf bytes:buf]) > 0) {
		NSLog(@"Copied %" PRIu32 " bytes", len);
		char *p = buf;
		while (len) {
			size_t readb = write(outfile, p, len);
			p += readb;
			len -= readb;
		}
	}
	    
	close(outfile);	    
}