If the product code contains a "W" , you have a V2 chipset. Version V1: Older models without the "W" are V1.

Before you begin, check your (Settings > About Phone).

The official service software used to recover phones from a "bootloop" or soft-brick state. Download Resources

Flashing a V1 firmware on a V2 device (or vice versa) will likely result in a permanent "hard brick" that cannot be recovered easily.

Hosts various regional firmware versions (IMEA, EURO, APAC).

You can find the flash files and tools on these reputable GSM archive sites:

A professional tool often used in GSM repair shops for flashing and fixing IMEI issues.