Oh, you mean this thread → MY20 or not? Will this be a problem?
Ok, so it’s a MY20 unit, it’s not reformatable.
We should not talk about firmware, because firmware is something else.
What you are referring to is software/package versions or builds installed.
Again, firmware is something else, not related to software lets say.
Question: are you suffering from lag as well?
Which packages do you currently have installed for maps?
If you are referring to that your unit already has these packages installed:
JR3T-14G381-AX
JR3T-14G391-AE
JR3T-14G423-AB
Then yes, you already have the required packages installed. That is: Gracenotes, Voice and Sync3.
You can continue with the following section: “EU 2.21 (F11) NAV Package Installation”