After 2 weekes i bought my n900 start with this message:

"All telephony functions, including emergency calls, are disables due to a communications error. to recover, you might have a reboot the device."

Also Ovi suite doesn't recognize the phone.

i supposed i installed something bad and
i try also to flash the phone but any result.

anyone can help me ? thankx
luke

Do I get correct that even after reflash your phone still have this problem? Or you haven't been able to flash it?

i reflashed before with my windows 7 and had problem in reflashing... yesterday i tryied also with windows xp and works perfectly..
i started and had my operator without this bad writing ...but this morning and turn on my phone another time.. and still the problem yet... also if i don't put inside the sim card make same writing.. is so strange....

I do not understand completely. So you flashed your phone and sim card is not detected? If so then what image did you flash? Newest one? List filenames if possible.

maybe you used the wrong fiasco?

can operators bar stolen phones? did you buy it second hand?

yes it's second hand.. but i used it for 2 weeks normally...
then start to do this problem.. and say this messagge in yellow (same color when you install some apps) and then i try to reflesh with

RX-51_2009SE_10.2010.13-2.VANILLA_PR_EMMC_MR0_ARM.bin

and

RX-51_2009SE_10.2010.19-1_PR_COMBINED_MR0_ARM.bin

the phone is not stolen because the owner give me also the sygic serial number in his own page.

did you use this guide:
http://wiki.maemo.org/Updating_the_tablet_firmware

First flash Combined(rootfs) firmware to n900 (do no use -R switch) then flash vanilla(emmc).

i tryied now but give me the same result.. same yellow writing and phone sim disabled...

your not in offline mode are you?