Since “6531e” is a code, search for it within context:
Firmware repositories like Nityanando Telecom and Firmware Free often provide direct links for specific models like the Itel it2090 or Intex Turbo 108 Plus . Flashing Procedure Overview 6531e w25q32bv flash file
Do not use 5V. The W25Q32BV and the 6531e are strictly 3.3V devices. 5V will destroy the flash immediately. Since “6531e” is a code, search for it