Vodafone 246 100% unlocked with rj45 cable:
1. Solder wires (pictures in a attachment or furious support - be careful with screen)
2. Run module Vodafone_Infineon_1.0.0.5444
3. Select Vodafone-ZTE 246/ZTE S500/ZTE S501
4. Select right com (box com)
5. Select UNLOCK
6. Select 115200 at speed
7. Press Unlock
8. Connect cable rj45 to box
9. Put battery in phone
10. Press power on (keep pressed)
11. Wait to finish
12. Disconnect phone
13. Power on phone and make a hard reset (with test card inside)
14. Phone unlocked.

pinout:
vodafone246pinout

log
Insert cable in box now [NO BATTERY INSIDE PHONE] !
Starting communication ...
Platform: E-Gold Voice3-32 [00 00] ...
Preloader sent ....
Loader sent ....

Flash ID(0): 00EF:4016


Checking firmware version ...
Detected: ED-DE-P118A2V1.0.0B10
Saved: ZTE_NONE_ED.....bin
Erasing ...
Writing ...
Erasing ...
Writing ...
Unlocked ! Remove battery and put back !
Time needed - 00:00:51