Summarize the background because it is a bit long:
DoA, temporary replacement, installation of new UC (updated with SW 8.2.0 & Italian locale pkg)!
Now, I am with a phone out of six (same model) with the soft buttons in English, even after several boot... why .
Ok, the same devices have worked some days to extreme necessity with other software / hardware UC... but why, after boot, only 5 have gone to Italian??? What can I do on the sixth 7942 to forget the texts in English & force the download of the correct language locale????
Have you tried re-creating the CNF files? Since the other phones are working, I would assume that the locale is loaded correctly and working.
no create cnf-files
Then factory reset the phone in question.