Click on the button (sometimes labeled as "Img File"). Browse your local directories, select your targeted Allwinner .img file, and click open. Step 5: Choose the Correct Write Mode This is the most critical technical step:

Connect the device to a display (HDMI or screen) so you can monitor progress. Plug in the power supply. Do not press any buttons.

Distinct options for creating bootable cards versus production-ready cards.