iOS: SDWebImage loads cell with incorrect images

I'm currently using SDWebImage to load pictures for my table cells, using the following code:

[cell.coverImage sd_setImageWithURL:[self.dataInJSONModel.Content[indexPath.row] CoverImage] placeholderImage:[UIImage imageNamed:@"imageplaceholder_general"]];

The problem is when I scroll up and down, the images were inserted into the wrong cells. After reading some post on StackOverflow regarding this issue, I suspect it to be due to that cells are reused when we scroll and hence the asynchonous download of the image may be placed on a cell indexPath that has changed.

Hence I implemented several changes e.g.:

SDWebImageManager *manager = [SDWebImageManager sharedManager];
UIImageView * cellCoverImage = cell.coverImage;
[manager downloadImageWithURL:[self.dataInJSONModel.Content[indexPath.row] CoverImage] options:0 progress:^(NSInteger receivedSize, NSInteger expectedSize) {} completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, BOOL finished, NSURL * oriURL) {

      NSArray *visibleIndexPaths = [tableView indexPathsForVisibleRows];
      if ([visibleIndexPaths containsObject:indexPath]) {

          cellCoverImage.image = image;
       }
   }]; 

Or even to compare URLs:

SDWebImageManager *manager = [SDWebImageManager sharedManager];
UIImageView * cellCoverImage = cell.coverImage;
[manager downloadImageWithURL:[self.dataInJSONModel.Content[indexPath.row] CoverImage] options:0 progress:^(NSInteger receivedSize, NSInteger expectedSize) {} completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, BOOL finished, NSURL * oriURL) {

   if([oriURL isEqual:[self.dataInJSONModel.Content[indexPath.row] CoverImage]])
    {
        cell.coverImage.image = image;

    }

 }];

Still the problem persist. Or I might have wrongly programmed it? Found several suggestions online but no concrete solution yet seen.

Need help!