OK!!! some good! it is starting now!

but problems not gone...

now if I power on after menu about flight and normal mode I choose normal and inpu PIN the next sentence appears on a screen
Configuration error. Please contact your network operator or service center.

Does it mean that I have to flash generic firmware on it?

and what is a comlete set of files?

main like Z610_R6DA001_MAIN_GENERIC_MY_RED52

file customisation like Z610_R6DA001_FS_C_ASIA_RED52 or generic as well?

some think more? finalisation files? what is it and where to get this one?

thanks a lot for answers!