hey, I'm from india too, you will need these files in order to debrand it.
MAIN : W880_R8BA024_MAIN_GENERIC_AI_RED52
FS : W880_R8BA024_FS_S_ASIA_LEVAN_RED52
custpack : HB1-06_Gen_CDA102568_110_R8A_GENERIC_S_ASIA_LEVAN
i'd recommend setool2lite to use for flashing. Here's the tutorial: Flash your phone and How to apply or remove patch using SETool 2 Lite
If you need any help further, just continue this thread