// My custom class has a specific property for each subview in this cell. For example, 'thumb' is a UIImageView subclass to layout left image in each cell
cell.thumb.image = thumbdownloader.propertydata.thumb;
[cell.thumb setNeedsDisplay];
[cell.thumb setNeedsLayout];
[self.table_view reloadRowsAtIndexPaths:[[NSArray alloc] initWithObjects:indexPath,nil] withRowAnimation:UITableViewRowAnimationFade];