If you install DriveDroid on a stock, unrooted device:
EtchDroid is an open-source application that allows you to write ISO or IMG files from your phone to an external USB flash drive using an . drivedroid no root
It uses the Android USB API to write data block-by-block to a real USB stick. Pros: No root required; completely free and open-source. Cons: You need a physical USB drive and an OTG adapter. 2. ISO 2 USB If you install DriveDroid on a stock, unrooted