Originally Posted by planetnokia:
“To upgrade a phone you have to go to a Nokia Service Centre. You can flash a mobile but I think that it is illegal to do so. To flash a phone, you need a flash cable, a flash box plus software and firmware files.
However, I would guess your 6510 is worth about 20 quid on Ebay so best live with the problem or get a new mobile.”
OR do it yourself, you gain experience and knowledge, if you do mess it up you only loose about 20 quid, its worth it, nobodys gonna know that you flashed it.