It is a bit more complicated that that.  Both Cingular/AT&T and T-
Mobile have restricted unauthorized access to third-party applications
(i.e. applications that are not signed by them, and which you can
"purchase" from the provider).   Clearly, Google Maps is a third-party
application.

What you need to do is to get some software for your computer that
allows you to browse the filesystem in your cell phone (this is
different from just allowing the computer access to the MMC/MicroSD/
TransFlash or similar card, which you can do directly on the
phone).    To do this:
 - If you use Windows, you can use "P2K Commander" or similar.  But
first, you need to install the USB communications drivers for your
phone.  Either get the Motorola Phone Tools from your provider (this
may be difficult without paying for it), or get download the drivers
from developer.motorola.com (you need to register for a free developer
account to get this).  They may also be available from third-party
sites, such as http://www.modmymoto.com or http://www.motomodders.net/.
Then, get "p2k commander from http://s5vi.vxxxstuff.com/commander/
(use version 4.9D for the v3xx).
- If you use Linux or Mac OS X you can use "Moto4Lin", available
either in your Linux distribution (Debian or Ubuntu), or from
http://moto4lin.sourceforge.net/ - the Mac OS X binary can be had at:
http://moto4lin.sourceforge.net/wiki/Mac_OS_X - no special drivers are
required.

Once you are able to browse the filesystem on your phone
(specifically, the "/a" folder containing the system software), you
can delete or rename this file:
    /a/mobile/certs/root/x509/kjava/j2me_domain_registry.sm

You are better off backing it up (or renaming it) in case you want it
back..  That's because although you now have the option "Ask once"
when prompted whether or not to use the data connection when running
third-party applications, the Java applications that are installed by
your provider (Cingular?) will no longer work at all!  (These are the
applications that are preinstalled under "Games & Apps").   This is
something you want to seriously consider before you delete the file.

An alternative would be to create or find a modified
"j2me_domain_registry.sm" file which allows both the Cingular or T-
Mobile signed applications to run, and allows third-party applications
to run with the option "Ask once" as opposed to "Ask every time".
Such a file will be very specific to a given phone configuration (i.e.
model - v3i,v3x,v3xx etc - firmware revision, cingular/t-mobile flex
configuration and so on).   Although there are some success stories on
http://www.modmymoto.com/, it will be harder to find the exact version
of the file/files that you are looking for.

Oh, and if you DO manage to get some of these tools to talk to your
phone, you may want to do a little bit of "seem" editing while you are
at it.  A "seem" is a series of configurations/options that control
the behavior of your phone.  For instance, there will be an option as
whether or not to display the european GSM (900/1800 MHz) and UMTS
(2100 MHz) bands under the "Network Setup" menu, in addition to the
Cingular ones (GSM 850/1900 and UMTS 850/1900) or T-Mobile ones (GSM
850/1900 or UMTS 1700).   Or you can choose to disable the "half data
rate" option, forcing your phone to use "full data rate" for
communication with the cell towers, thereby increasing voice quality.

Good Luck!

On Jul 18, 7:45 pm, Javi wrote: