For unlocking E700 it is recommended to use the E700 cable, more specificed cable type is
Sysol.
For unlocking E700/E800, your caase use the following procedure:- Connect 9V battery to the clip.
- Power OFF your phone.
- Connect Phone to the clip via right cable.
- Press shortly unlock button in the clip.
- If led goes Red press power ON in your phone and hold it until led goes
- Green - If led goes Green just wait.
- Wait until led will blinks a few times.
For unlocking other models, I do highly recommend you to read the following guide/manual
http://forum.gsmhosting.com/vbb/showthread.php?t=243782