If the automatic tool fails, you may need the "Nokia Care Suite" (OST LA). This method is riskier:
She navigated to "Nokia 6310 (2021)" and downloaded the .zip file (about 500 MB). No automatic tools—just a raw file. How to Update Software on NOKIA 6310 -2021-
: Since the Nokia 6310 (2021) supports Wi-Fi, it is recommended to connect to a stable network to avoid data charges and ensure a smooth download. If the automatic tool fails, you may need
Updating the software on your Nokia 6310 (2021) Go to product viewer dialog for this item. If the automatic tool fails