i tried 10 different sim cards, papers and stuf but no success.
and when i tupe *#06# it wont show the imei.
and when i download firmware from navi firm i download 4 files,
i flash just one what to do with the other 3?
and when i update over the air the fhone never boots up, then i flash pr 1.1.1 again ant it boots up but the sim is not working.
i am really

Here may be solution for you ..

As you said in your first post

"( i think it is Italy because of this number behind the battery 0574385 )"

it is what creating problem i think (your are guessing it is Italy)

as i mentioned before that i also had same problem when i installed global firmware and i have tried US also in both firmware i got same problem like you(the sim was locked or blocked) but in my case device booted-up

So what i think that you are guessing that it is italy,i think you need right firmware for your device only, i mean each country has different .bin files. You must be using wrong .bin file or firmware. If you don’t know what country your n900 is belong to, you should download all countries firmware and flash with each firmware and try if they work.

Also you are saying that "and when i type *#06# it won’t show the imei." then how did you get firmware files i mean when you download firmware from http://tablets-dev.nokia.com/nokia_N900.php you need to give IMEI.

Also if you tell us the name of firmware you are using we can tell you what country's firmware you are using

i get the imei from behind the battery, it is printed on the device.
now i know that it is italy phone because of the number 0574385, in navifirm the italy firmware is marked with that number.
and because of the keybord:

i will now try the first firmware for n900 ( old ones )

what to do with this four files:

RX-51_2009SE_3.2010.02-8_PR_COMBINED_MR0_ARM.bin
RX51_0574385_3.2010.02.8_001.dcp
RX51_0574385_3.2010.02.8_001_signature.bin
RX51_0574385_3.2010.02.8_001.vpl

i only flash
RX-51_2009SE_3.2010.02-8_PR_COMBINED_MR0_ARM.bin
but what with these:
RX51_0574385_3.2010.02.8_001.dcp
RX51_0574385_3.2010.02.8_001_signature.bin
RX51_0574385_3.2010.02.8_001.vpl

have you tried... RX-51_2009SE_20.2010.36-2_PR_COMBINED_MR0_ARM.bin

?

yes and it boot forever.

do you know what to do with these
RX51_0574385_3.2010.02.8_001.dcp
RX51_0574385_3.2010.02.8_001_signature.bin
RX51_0574385_3.2010.02.8_001.vpl

i used only

RX-51_2009SE_20.2010.36-2_PR_COMBINED_MR0_ARM.bin

but global firmware did not work for me either.

so i installed indian (as i have an indian mobile)

RX-51_2009SE_20.2010.36-2.004_PR_COMBINED_004_ARM.bin

and it works fine for me .

for your question... i dont know what are those files. and what to do with them.

i still suggest you to flash with each country's ARM.bin files if any of them works for you

ok i tried every italy and global firmware.
1.2009.42-11
1.2009.44.1
2.2009.51-1
3.2010.2.8 these four boot up but i have red line on sim

10.2010.19-1
20.2010.36.2
21.2011.38-1 these 3 wont boot up.

how did you know that it is indian ?
and what is your code below the imei?

for your question

"how did you know that it is indian ?
and what is your code below the imei?"

because i bought it from india.( i was talking about my mobile)

firstly i don't promise that if you follow or do what i will say is 100% work for you.

i am only trying to say that when i bought my mobile i wanted to flash it. so tried a globle firmware but that gave me a red line on my sim card. so i think that i should try usa firmware(i know it is childish to flash an indian mobile with a usa firmware ) but i wanted my mobile look like as usa(because indian firmware is slightly different from others i.e it does not have folder in menu called "More" etc.)



Thus in both firmware (including global) i got same problem like you( a red line on sim card)


so it was my story.



Now what i think that if your mobile is not recognizing the firmware you are flashing with (even italy's firmware) it MAY work with other country's firmware(again this is not promise for you) but as a last resort before taking any action i think it worth a try.

kindly note I MAY BE WRONG
good luck!

i need to know just one more thing:
so as long as you have an indian firmware you are good with sim no mather if it is pr 1.3 or pr 1.1 and did your phone showed imei when dial *#06# ?