How i change 3110c purchasing date?

[clydejanc]

Anybody knows how to edit or erase the purchasing date of a nokia 3110c? Purchasing date can be found by pressing *#92702689#.
I tried to edit it with phoenix service software and J.A.F but its locked and cannot be changed or deleted.

Are there other ways to edit or delete it?

Thanks a lot

[krishna]

Use infinity bb5 dongle u can reset life timer