Initially I had good results on N900s 1 and 3, had to re-do N900 2 before it started working. Later today (about 18 hours after doing so), N900 2 against displayed the 'all telephony disabled blah blah' error. And N900 3 is intermittently losing connection to cell network and showing the no-sim-card icon, then having it reappear and getting connection back (I'm also unsure if N900 2 is able to connect to 3G/3.5G or if N900 3 is able to connect to 2G/2.5G). ... With more force on the chips N900 3 may even go back to being as reliable as it was before the issue, for all I know.