Require quote to upgrade current Prestashop site and theme from Prestashop V1.3.3 to V188.8.131.52.
Must ensure all data is backed up and restored.
All display / layout must remain as it is currently but of course in new version.
Back up of data is essential.
As it is a live store, I would prefer if somehow a test site could be created and only migrated once absolutely certain all data and layout is correct.