On my site (FastCarPhotos.com), I use Lightroom to manage the images to the site.
When a customer purchases an image, I then go into the order, go the the edit screen for the order, and then I upload the high-resolution, full sized image. I then notify the customer to use the download link to retrieve their image. I’ve always used this method in previous versions of Backlight.
I’m now using Backlight 5, and I used the same process as I have always used, but now, it still sends the original smaller file and not the updated version.
There are memory limits set in the php.ini file.
It’s usually found in the root of your site. Download it and edit it with a text or code editor. Look for
Maximum allowed size for uploaded files.
; http://php.net/upload-max-filesize
upload_max_filesize = 64M
(search for upload_max_filesize )
Yours is probably set to 32M or something. Just change that, save and upload to replace the old file.
If you don’t see a php.ini file in the root of your site, contact your host and ask them to increase the limit.