Software Update Failed An error occurred downloading the latest version of watchOS on your Apple Watch.

Hi Mfathy77,

Thanks for posting in Apple Communities.

To ensure the update is completed for Apple Watch, join a stable Wi-Fi network and initiate the update again. For ongoing behavior, check that the paired iPhone is running the latest update in Settings > General > Software Update. Update iPhone, if necessary.

Update your Apple Watch

Update your iPhone or iPad

Restart both iPhone and Apple Watch and initiate the update.

Regards.