Generating the Code for your Blackberry using the MEP from your phone rather than selecting the network, gives one single correct code for your phone (if you select the network there are more than one possible codes)
How to Read MEP from Blackberry with out a cable.
First step is to access to the “Help Me” menu, to do so, on the main screen of the phone hold the following keys : ALT CAPS H (at the same time)
Note: For Pearl and other Sure-type phones press and hold the ALT key (Bottom left) and type E A C E, for Storm, hold the BACK arrow, and tap the screen in the following areas: TOP LEFT, TOP RIGHT, TOP LEFT, TOP RIGHT.
Type the PIN, App Version and Uptime in the Escreen Keygen, Press “Generate” and our Calculator will generate a code:
Now simply type the KEY directly on to that screen ('Help Me'). Nothing will appear when typing. For numbers hold the ALT key when typing. Now you should be in the engineers menu. if you are not please try again ensuring the data you entered into the Escreen Keygen is EXACTLY as displayed on the Blackberry 'Help Me' screen. If you close the screen ensure you change the Uptime on the form. Navigate to ‘OS Engineering Screens‘
Now scroll down to ‘Device Info’ and then scroll down until you see MEP-XXXXX-XXX’
Alternative Method Using MEP reader and USB Cable