You mean you bought a/some credit(s) from Da Vinci? Yup Da Vinci works in basically the same way as Wotan, except I think Da Vinci is much more expensive for DB2020 phones (new phones with hardout security), such as my K800i. That's why i went with Wotan
You'll have to download Da Vinci's flashing software, which should be available from their official site, considering you've already paid for it.
Before you start flashing though, make sure you have a clear idea on which firmware and CDA you'd like your phone to be. Firmware is the basic overall operating system of your phone, so I'd suggest a generic firmware, and for the CDA, choose whichever language suits you. I chose Taiwan CDA cuz I occasionally have to send txts with traditional mandarin.
Lemme know if you need help
