enV version 1 is, menu , 0, 000000, network select , 1xonly, OK
the new version 2 firmware ( phone OS ) has a new service access code
my search turned up (2) different possibilities of the entry, the code is the same ##77647269900 ..
7764726 spells program
The new LG's and firmware are now ##program9900 (or 9400, 8700, 8600, etc)
I don't know if this is open or closed, so you may have to try both ways, try it closed first
do not press menu, do it like you were dialing a phone number but don't press send
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Open the phone, press OK and then type it in. Do NOT type "program" though - use the numeric reprentation of "program" (7764726) ... in other words, you press ##77647269900
Though maybe you don't need to press the OK first. So try it both ways.
or maybe
Open phone, don't press "OK" (leave it on the default screen) and press "SYM"-3-"SYM"-3-p-r-o-g-r-a-m-9-9-0-0-"SEND" then enter 0-0-0-0-0-0 when it asks for an access code.
The screen should look like you are inputting a number to dial, and it will read "##77647269900" before pressing "Send".
my phone is version 1, so i can't test this to verify which is the correct way or if they all work