MKIV - doesn't take a new disk

[babo_]

Gents,
have a built in navi. I think it has the latest v.32 OS on MKIV.
After some years, the DVD finally gave up and died. I burned the 2012 east cost iso i have, but it won't take it with "Incorrect DVD in navigational unit" type of message.

so i looked inside the 2009 iso and 2012 - they have drastically different folder structures.

2009:

-r-xr-xr-x 1 root root    758 Aug  8  2007 abstract
-r-xr-xr-x 1 root root     38 Aug  8  2007 bibliogr
-r-xr-xr-x 1 root root 750592 Aug  8  2007 carinet
-r-xr-xr-x 1 root root    601 Aug  8  2007 copyrigh
dr-xr-xr-x 1 root root   2048 Aug  8  2007 db
dr-xr-xr-x 1 root root   2048 Aug  8  2007 tpd

2012:

-r--r--r-- 1 4294967295 4294967295  545 Jun 28  2011 cdrom.toc
dr-xr-xr-x 2 4294967295 4294967295   88 Jun 29  2011 config
dr-xr-xr-x 2 4294967295 4294967295 1528 Jun 29  2011 db
dr-xr-xr-x 9 4294967295 4294967295  428 Jun 29  2011 dbal
-r--r--r-- 1 4294967295 4294967295 1448 Feb 17  2010 files.cfg
-r--r--r-- 1 4294967295 4294967295    2 Apr 21  2011 INFO_MAP.TXT
dr-xr-xr-x 3 4294967295 4294967295   84 Jun 29  2011 telemat
dr-xr-xr-x 3 4294967295 4294967295  148 Jun 29  2011 tpd

Question:
do i have a wrong iso for 2012 or i'm just been a silly rabbit?
and if i have a wrong 2012, how should it look like "inside" ?

Thank you