This technical write-up covers the chipset paired with the W25Q32BV flash IC, commonly found in budget feature phones. Technical Overview CPU: Spreadtrum/Unisoc (a high-integration baseband for low-cost GSM devices). Flash IC: Winbond W25Q32BV (4MB / 32M-bit SPI Flash).
is a common Spreadtrum (Unisoc) chipset used in feature phones, often paired with a Winbond flash chip, which typically has a capacity of Flash files for these devices are usually available in 6531e w25q32bv flash file link