code for blaupunkt radio/cd in rover 45?

Hi there i wonder if you could help with the code for my blaupunkt radio serial no bp9262x1273087 part no 7649262042. the battery went flat and it just comes up asking for the code.

There are other numbers on it fd449 index06.
xqe 100 380.
7649262042/40/44/46/48x.
1273087
8631-312-2925 but dont know what they mean.thanks