The download is offered over HTTP even though the current document was delivered over a secure HTTPS connection. If you proceed, the download may be corrupted or tampered with during the download process.
Cafodd y llwyth ei gynnig dros HTTP er bod y ddogfen gyfredol wedi'i chyflwyno dros gysylltiad HTTPS diogel. Os ewch ymlaen, efallai y bydd y llwyth yn cael ei lygru neu ymyrryd ag ef yn ystod y broses llwytho i lawr.