K550i-W610i (Cybershot Walkman) Unlocking help

Hey Everyone,
I have a K550i I bought in India.. I've been using it with Airtel and Vodafone.. One day when I removed the Vodafone sim and put in Airtel and switched the phone on, it said insert sim or view demo.
My phone is at CID53(Unluckily!)
I used JD Flasher and Flashed my phone to the following firmwares:

K550_R8BA024_FS_BALTIC_RED53.fbn
K550_R8BA024_MAIN_GENERIC_LI_RED53.mbn
K550_CDA102568_2_R5A_Generic_Central_Europe (CustPack)

Then I used the main firmware and the Simox SimLock Remover thing(Version 2.2)
I got the patch and I used JD Flasher and used the anycid method to apply the unlock patch i got..
But it still didnt work out.
Only the Vodafone Sim Works..

SO then I used JD Flasher and flashed my phone to the W610i Firmwares..

W610_R8BA024_MAIN_GENERIC_NA_RED53
W610_R8BA024_FS_AMERICA_2_RED53
HB1-06_Gen_CDA102568_16_R8A_GENERIC_AMERICA_2 (CustPack)

Then I used the Simox patcher, made a patch, used the anycid method and flashed my patch onto the phone..
But it still isn't working with my Airtel Sim.. Only works with VOdafone..

Am i missing anything in the above process?
Please help me and let me know where i went wrong..

THanks in advance,
Saaketh:)

Read here: http://www.topsony.com/forum/far-manager-f31/patching-cid53-db2020-amp-db2010-2012-a-t16507.html

Thanks for the link, but I did all that was mentioned there and it still didn't work... :(

try d unlocker

what unlocker?

ohh! u mean d ultimate unlocker?
but thats not free..

any other way?

anyone there?

using cruiser dongle: use the SE A1 Fast java unlocker, then follow the steps...

using SE Tool: identify the first the fone... then do the unlock procedure...

easy way to do it...:D

It is a video tutorial...maybe you skip something. Watch the video.

Filebeam - Beam up that File Scottie!