Where do I download the at commands sdk firmware

I have a quectel modem, and I want to run some at commands on it to check up on the APN, but I cannot find the default firmware of the at commands to check up on it. (The current program on the SDK is from my company, which we already flashed on it, so I’m searching where can I get the at commands program to flash the modem)

I’m using the BC660K version

Could you please tell me your fw version and I will send you the latest version.