imaginateur wrote:
large parts of my software went corrupt - including the original themes
Then, your file system got corrupted. A software-update over-the-air does not and cannot recreate that. Because your phone does not have a USB port, officially, the Nokia Software Recovery Tool is no option. Consequently, I would go for the hammer – sending it back to your dealer who in turn sends it over to a local but genuine Nokia Care Centre sound like a total financial loss in your case.