Thanks for letting us know about your difficulties and concern about your Samsung Galaxy phone internal memory status should you decide to proceed downloading and updating the software to the latest version.
You got it right and I highly suggest free up more storage space by deleting unwanted apps, photos, videos, cache, junk files, etc. and or transfer your saved video, photos to the Secure Digital (SD) card.
Should you need further assistance and guidance, you may contact us via our online Samsung Customer Care support channels below.
