i need help, im facing difficulties in upgrading to 2.1 version, it saids that i alrdy have the latest version while my version onli is 1.6

the story goes like this, im tryin to upgrade my firmware which is currently running 1.6, i follow all the step that's require to upgrading the phone to 2.1, but once all done, i found that the firmware still showed running at 1.6, im trying to repeat the steps again and it told me i alrdy got the latest version. what shud i do ?

thank u in advanced