If you bought the device from a distributor (e.g., Mouser, DigiKey, RS Components), log into your account and check the product page. Distributors sometimes host firmware to reduce support load.
If you actually need the correct firmware file, I strongly recommend you first confirm the exact make and model from the device’s sticker and then check the manufacturer’s official website or contact their support. Would you like help identifying the correct manufacturer for that model string? dskd8003ime1b firmware download new