Howdy,
Recently bought and am using a Nuvi 755T.
Worked great over a 3 week 2750k EU trip.
Now back in TX.  
Got my nuMaps Onetime update cd for NA NT 2010 via USPS.
This update is supposed to take me to NA NT 2010.20 from NA NT 2010.10
Unfortunately I keep getting this (-- garmin gps not eligible --
previous map version not installed.) on a screen when I try to do the
update as per the cd install update steps.  When I acknowledge the
message the installer closes without installing the update to my
garmin unit.  From the same cd I had no problem installing the updated
NA maps for use with Map Source.
I searched the garmin knowledge base and found no clue as to what I've
over looked.  Everything seems to be working fine.  Map Source is
A-OK.  The latest garmin online communicator is installed.  I can
upload and download to the 755T from Map Source.  I have an SD card
and I'm able to view that content (grand kids photos) with no problem.
Currently my Nuvi 755T has NA NT 2010.10, and I have been using it
over the past few weeks in and around Dallas/Ft. Worth.
Thanx in advance for advice.
Pete

On Sat, 14 Nov 2009 12:48:04 -0600, Pete the Pilot <noda...@att.biz> wrote:

I assume that you've purchased (or received with the unit) and original CN NA
NT for that unit.  If not, it won't update regardless of whether you have an
original of some other map set.
--
Carl Heinz
cfhein...@charter.net
(Remove number)

news:4gguf5pkdcej37p009551mjagebgi3eeif@4ax.com...

why even bother ?  when you are already on the latest ?

When you ordered, you had to supply the serial number of the 755T,
and the new DVD will probably be locked to that specific unit ?
BTW - you mention it's a CD, but all my maps came on DVD ?
Can you tell it's the 2010.20 version DVD vs what you already have installed
?

hmmm - where is the current NA map image installed - on the SD card, or in
the 755 memory ?
The upgrade might only be looking at the memory of the GPS ?

Is the clue - "Worked great over a 3 week 2750k EU trip."

What map were you using there? Is it still loaded? Were you using NA &
EU combined?

On Sun, 15 Nov 2009 00:13:49 -0800 (PST), maceda <valdrizor...@gmail.com>
wrote:

I was wondering whether he'd purchased the "original" EU and hadn't purchased
an original NA.

A quick check for him would be to check his my.garmin account and see which
updates were available--and to see whether it reflected an original NA.
--
Carl Heinz
cfhein...@charter.net
(Remove number)

Thanx for the replies and questions.  I'll address each in order as
best I can.
xx
begin Carl Heinz wrote  
I assume that you've purchased (or received with the unit) and
original CN NA NT for that unit.  If not, it won't update regardless
of whether you have anoriginal of some other map set.
end of Carl Heinz wrote
xx
begin Pete's reply -
I think the answer is yes.  The Nuvi 755T comes with CN E NT and CN NA
NT installed within the internal memory of the Nuvi display unit. I
have the registration codes for both map sets.
xx
begin ps56k wrote
why even bother ?  when you are already on the latest ?
xx
When you ordered, you had to supply the serial number of the 755T,
and the new DVD will probably be locked to that specific unit ?
BTW - you mention it's a CD, but all my maps came on DVD ?
Can you tell it's the 2010.20 version DVD vs what you already have
installed
?
hmmm - where is the current NA map image installed - on the SD card,
or in the 755 memory ?
The upgrade might only be looking at the memory of the GPS ?
end of ps56k wrote
xx
begin Pete's reply -
My CN NA NT version in memory is 2010.10 and the nuMaps onetime DVD
with CN NA NT is version 2010.20.  Ah, yes, it is a DVD.
The older NA map sets 2010.10 are in the display unit memory installed
by garmin at the factory.  The only stuff on the SD card are files I
have uploaded like photos.
xx
begin maceda wrote
Is the clue - "Worked great over a 3 week 2750k EU trip."
x
What map were you using there? Is it still loaded? Were you using NA &
EU combined?
end of maceda wrote
xx
begin Pete's reply
As stated earlier this nuvi 755T comes with NA and EU map sets
installed by the garmin factory.  When we got into our rent car at the
Amsterdam Airport we simply changed the country to Nederlands etc.
etc.
xx
begin the 2nd Carl Heinz wrote  
I was wondering whether he'd purchased the "original" EU and hadn't
purchased an original NA.  
A quick check for him would be to check his my.garmin account and see
which updates were available--and to see whether it reflected an
original NA.
end of Carl Heinz wrote
xx
begin Pete's reply
Went back to My Garmin.com and logged in as you suggest.  The site
shows I have both North America and European map sets on my nuvi 755T.
On the Map Updates page it shows a nuMaps Onetime CN E NT available to
purchase.  Next to nuMaps onetime CN NA NT it says "free update has
been ordered".  
OBTW back in August when we got this Garmin new an update for CN E NT
was not available.  Since only one free update was offerred with my
unit I opted for the CN NA NT update and ordered it as a disc(DVD)
vice a download.
I hope my replies are helpful, and I look forward to any ideas you all
may have about how to get the ontime update into my display unit
memory from the DVD.
Pete

On Sun, 15 Nov 2009 17:44:29 -0600, Pete the Pilot <noda...@att.biz>
wrote:

I hope the right people take the time to read your reply. You
certainly didn't do yourself any favors with your custom quoting
style. Agent 5.0 can do a fine job of quoting text, if you let it.

"Pete the Pilot" <noda...@att.biz> wrote in message
news:b2ttf5120ps1neluh8peqahi98ifi3pbcc@4ax.com...
| Howdy,
| Recently bought and am using a Nuvi 755T.
| Worked great over a 3 week 2750k EU trip.
| Now back in TX.
| Got my nuMaps Onetime update cd for NA NT 2010 via USPS.
| This update is supposed to take me to NA NT 2010.20 from NA NT 2010.10
| Unfortunately I keep getting this (-- garmin gps not eligible --
| previous map version not installed.) on a screen when I try to do the
| update as per the cd install update steps.  When I acknowledge the
| message the installer closes without installing the update to my
| garmin unit.  From the same cd I had no problem installing the updated
| NA maps for use with Map Source.
| I searched the garmin knowledge base and found no clue as to what I've
| over looked.  Everything seems to be working fine.  Map Source is
| A-OK.  The latest garmin online communicator is installed.  I can
| upload and download to the 755T from Map Source.  I have an SD card
| and I'm able to view that content (grand kids photos) with no problem.
| Currently my Nuvi 755T has NA NT 2010.10, and I have been using it
| over the past few weeks in and around Dallas/Ft. Worth.
| Thanx in advance for advice.
| Pete
|

Hey Pete!
Ever a pilot for Sunwing?

--
Regards,
Richard Harison

On Sun, 15 Nov 2009 17:44:29 -0600, Pete the Pilot <noda...@att.biz> wrote:

I think it's time to give Garmin a call.  Seems like the update should have
worked on the basis of your my.garmin findings.
--
Carl Heinz
cfhein...@charter.net
(Remove number)

begin Pete's reply -
I think the answer is yes.  The Nuvi 755T comes with CN E NT and CN NA
NT installed within the internal memory of the Nuvi display unit. I
have the registration codes for both map sets.
----

When you have multiple large area maps,
are they combined into one IMG file,
or are they in separate IMG files on the GPS ?

Can you take a look at the GPS via USB,
and look at the \Garmin folder ?

With my GPS connected to the USB,
and bringing up the Garmin website,
logging in and doing the MyMaps thing...

I only have 1 map and this is how it shows in MyGarmin -
(with codes XXX'd out)

Installed Maps
Unlk/Reg Sheet,CNNA NT 2009.10 Limited
Region: City Navigator North America NT 2009.10 Limited, Deluxe All Regions,
Jan 09
Code: xxxxx
Unlock Code: xxxx
Date Unlocked: March 6, 2009

if you have multiple large maps,
are they combined like my Topo ?
or how are both the NA and EU maps installed together ?

On my GPS in the \Garmin sub-dir

gmapprom.img        1.1gb    my CN NA NT map ?
gmapbmap.img        92mb   ??
gmapsupp.img         19mb   my topo selected areas ?

I can't answer for the 755 but on my Nüvi 670 which also came from Garmin
with both NA and EU maps I have two files, gmapprom.img and gmapprom1.img. I
can update them independently of each other. But I had small problems
updating to the latest EU maps because they were bigger than the earlier
ones I had and I had to free some space on the unit to be able to load them.
That may be the problem for the OP as well.

--
Hasse

news:hds87b$16i$1@news.eternal-september.org...
tnx -
can't figure out where the disconnect is coming from,
as all the ducks have to match - else you're going to get the error
message...

#1 - Map names as shown exactly on the GPS "about" screen ?
#2 - Order updates for that specific GPS serial number - same exactly named
map ?
#3 - Attempt to install - needs to find previous version on same serial
number GPS ?
#4 - ??

Hey Richard,
Got started flying A6 Intruders with the US Marines.
Then, SunJet International flying MD-80s.
Then, Kitty Hawk, on DC-9s and B-727s.
Been retired for almost 5 yrs.
Thanx for asking.
Good luck at Sunwing!  Sun Jet did vacation charters. Kitty Hawk was
all freight.
Pete

Howdy again,
Appreciate the observations and suggestions. Including the how to with
Agent.
 With my garmin  nuvi 755T.   I'll try updating armed with your
insight.  If unable, I'll give Garmin a call.  Either way I'll reply
again with my outcome.
Pete

"Pete the Pilot" <noda...@att.biz> wrote in message
news:ucp3g599is3ofe4627olbevt3d4d8apolo@4ax.com...
| Hey Richard,
| Got started flying A6 Intruders with the US Marines.
| Then, SunJet International flying MD-80s.
| Then, Kitty Hawk, on DC-9s and B-727s.
| Been retired for almost 5 yrs.
| Thanx for asking.
| Good luck at Sunwing!  Sun Jet did vacation charters. Kitty Hawk was
| all freight.
| Pete

Sunwing flight to HUX in 2006
Captain ID'd self as "Pete the Pilot"

--
Regards,
Richard Harison

On Mon, 16 Nov 2009 15:26:57 -0600, "ps56k"

Looks like I missed this post, please excuse the piggy-back

I have a new (5 week old) 255W which came with full European
mapping pre-loaded.

Having encountered the insufficient space problem with my old
C330, I removed all un-needed voice, text and help files from the
unit as per the instructions on the Garmin website.

When I tried to load my free map update, CNEUNT2010_20
(Full European mapping) to the 255, I got an 'insufficient space'
error.

On phoning Garmin, the tech told me to load Spain/Portugal and
he'd send an e-mail on how to resolve the problem (I'm still waiting
on the e-mail !). I did so and, at that point, WinExplorer told me I
had : Used space = 304MB, Free space = 1.50GB.

Phoned back the next day and the problem was 'sorted' ?

The FULL mapping is now on an SD card (just as well I had one)
and I have overwritten Spain/Portugal with maps which are more
useful to me.

I don't think this is really a satisfactory solution. As I put it to
the technician, 'if you bought a new laptop with Windows pre-loaded
and the first time you tried to update (or add another program) you
were told, 'insufficient drive space'  . . . would you be happy ?
--

http://www.ian-stewart.eu

Close out from Pete,
The solution was staring me in the face.
Turns out on disc DVD one time updates are published about once a year
according to the Garmin rep I spoke to via phone.
Updates inside that cycle must come via a download.
When I tried the "free" update with the mailed one time update DVD one
of the screens generated by the setup.exe gave me an option to do a
download vice using the files on the DVD.  I choose DVD.  Wrong
choice.  When I used the download choice my nuvi internal memory got
updated to CN NA NT 2010.20.  That is a lot of data to download.  Took
my set up about an hour with a high speed connection during the wee
hours of the AM.  
To those who joined this thread.  Thanx!
Pete

"Pete the Pilot" <noda...@att.biz> wrote in message
news:t8bbg55c7rs30ciku8d7hmc5scq7hadtv0@4ax.com...

tnx for the update -
That's why we asked about what version was really on the DVD.
When I did one of my updates last year,
there was not even an option for DVD - it was download only.
I actually had two media - one was the major yearly update via DVD,
and then the other was a download for an incremental.

Also - in the future... toss in a few line breaks.... easier to read...