Windows Mobile Standard

Hello all, new to this forum, i recently purchased a mpx220, and i found out that the rom has never been updated, soft volume and so on. i've check a few other forums and nobody can tell me where to find the updated rom, but with enough searching i found it. Now my question is, how do i get it to the phone so that the phone will update, or i can copy and paste it to the file system of the phone, but where in the phones file system do i put the updated file so that the phone will recognize it and update. Other than that, i love the phone. Please help !!!!!!!!