Blaupunkt Bp 330 Software Update Guide
Let me know which you are in to narrow down the support link. User manual Blaupunkt San Marino 330 (English - 18 pages)
Blaupunkt BP 330 Software Update: Step-by-Step Tutorial Blaupunkt Bp 330 Software Update
While specific steps can vary by firmware version, the standard manual update for the San Marino series follows this workflow: How To Update Your Android Head Unit + Apps Let me know which you are in to narrow down the support link