(Citation: Cisco Synful Knock Evolution)

On embedded devices, downgrading the version typically only requires replacing the operating system file in storage.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request. ### Instruction: List the MITRE techniques contained in the text. ### Input: (Citation: Cisco Synful Knock Evolution)

On embedded devices, downgrading the version typically only requires replacing the operating system file in storage. ### Response: T1601.002.