Note - Please Try This Trick On Your Own Risk.
This was tested by me and it worked....
I Dont know if it did not work on your corby.......
Lets Start If You Proceed -
1.First, check your lock status using this code [ *#7465625# ]
You will see something like this:
1.[ON] Network Lock
2.[OFF]Subset Lock
3.[OFF]SP Lock
4.[OFF]CP Lock
2.Click the rectangular box on the lower portion to return to
the home screen then proceed to the next step.
3.Type this code to change the Network Lock status
(#7465625*638*00000000#) <-Thats 8 Zero's
4.You will see a notification that the Network Lock is now turned off.
5.Type [ *#7465625# ] again and you'll see its now changed.
2.[OFF]Subset Lock
3.[OFF]SP Lock
4.[OFF]CP Lock
6.Now power off your phone and insert another sim.
(Any Sim) and WHOOOO! its now openlined..
Credits goes to Clark2324 of Symbianize.com
P.S:
To Network Relock the phone use
[ *7465625*638*00000000*00000000# ]
