8310 WITHOUT Gps? (not 8300)

HI i'm a new user of blackberry (2months now and i very happy with my curve 8310)
I have bought the phone on ebay. The phone was lock to VODAFONE UK and i'm in france.
i have unlock the phone with an unlock code --> everything is ok
i have email and navigation with no problem.
BUT i can't lock a satelitte to have the gps navigation...

i have try bbmaps /nav4all/amAze/google maps / garmin mobile / and no one can lock a satelite.
i have try 2 version of OS 4.22 and 2 4.5

and now i'm with 4.5 OS (good for html)

i have test in MANY place with many wether for LONG time (1hour to wait in the middle of the garden with huge sun and no cloud)

in option / about i have :

BlackBerry� 8310
Terminal mobile (EDGE)
v4.5.0.37 (Plate-forme 2.7.0.55)
Cryptographic Kernel v3.8.5.32a
Configuration Micro Edition: CLDC-1.1
Profil Micro Edition: MIDP-2.0
Version JTWI Micro Edition: 1.0
Version m�dia Micro Edition: 1.1
Version PIM Micro Edition: 1.0
Version du fichier Micro Edition: 1.0
Micro Edition Bluetooth Version: 1.1
Micro Edition Location Version: 1.0.1

on the top of the blackberry there is NOT write GPS ...
in the bbmaps i have an INTERNAL GPS so i think it's a real 8310.

i have call my carier and everything is ok for them.

vodafone uk can LOCK my GPS?

i have reinstall my OS and i have delete the vendo.xml but i have a VODAFONE RED Screen when i start the phone.

WHAT CAN I DO ??

Please help me...