Finally I was unable to SIM unlock. All the tools and apps failed to unlock. Then I tried reverting back to stock, but that was also not successful. Then finally reverted to stock JF2 using odin and manually selecting pit and firmware files. Then again all tools and apps failed to unlock phone.
Then I tried the manual edit of nv_data.bin file as given in xda forum. There also adb shell was not getting su permission though the phone was rooted.
As a final step installed a terminal emulator on phone and then took the nv_data.bin, edited it with hex editor and then put it back to phone and set the permission using term as given in Instructions. The phone was unlocked at next reboot.
Installed Serendipity ROM, yet to evaluate it. BTW, at first glance I liked the AXURA ROM the phone came with, would have stayed with it for some time if I hadn't faced unlocking problems.
Edit: Found that this may be the reason for my problems in unlocking: http://forum.xda-developers.com/showpost.php?p=8472272&postcount=30
Then I tried the manual edit of nv_data.bin file as given in xda forum. There also adb shell was not getting su permission though the phone was rooted.
As a final step installed a terminal emulator on phone and then took the nv_data.bin, edited it with hex editor and then put it back to phone and set the permission using term as given in Instructions. The phone was unlocked at next reboot.
Installed Serendipity ROM, yet to evaluate it. BTW, at first glance I liked the AXURA ROM the phone came with, would have stayed with it for some time if I hadn't faced unlocking problems.
Edit: Found that this may be the reason for my problems in unlocking: http://forum.xda-developers.com/showpost.php?p=8472272&postcount=30