Help! k800i problems with firmware

[uttern90]

Hello! (Dont mind my spelling, bad at it. :) )
Ill just start from the beginning.
My phone (k800i) died, Once agian, the screen was just going Black and white.
I has happened before and then i did leave it on a service place and it cost me 500Sk (50us)
so this time i was googeling it and found out that many have the same problem with the k800i. And that the problem was the firmware.
As dumb as i am i just downloaded some firmware and installd it with Xs++.
And now it works..or almost, this message appers.


"Swedish: Konfigurationsfel"

Kontakta nätoperatören eller service centret

English: Confugiratons error

Contact your phoneoperator or Service center"

So..someone help? what should i do, can i fix it by my own?..newbie on this stuffs.

The firmware i was using was
K800_R8BF003_FS_EUROPE_4_RED52.fbn
and
K800_R8BF003_MAIN_GENERIC_WI_RED52.mbn

-DBID: db2020
-OTP CID: 49
-EROM CID: 52
-CDA: CDA102568/13 R8A
-Firmware: R1KG001
-EROM: R3A016