I would default the system at 3.0 then install the 7.1 and re-program. THe reason I say this is because it looks like you have minimal programming on the system at tis time. But if you choose not to there is an upgrade tool that you could use which should save programming al the way though the upgrade process.
The upgrade tool is actually 6.1 software. If you go that route remember that any old, invalid programming will be brought forward to the new version. With fewer than 30 or so phones it will probably be faster to just reprogram. Remember that you'll need the PRI Enabler keycode (NTAB2769) in addition to the hardware.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.