Copy the firmware files directly to the of the USB drive (do not put them in a folder). Plug the USB into the head unit's primary USB port.
Corrupted zip file or wrong update script. Fix: Re-download firmware. Try a different SD card (many Chinese cards are fake). Format card with SD Formatter tool, not Windows built-in. K2001n Nwd Firmware
Unplug the USB drive immediately after it reboots to avoid entering an infinite update loop. System & Factory Settings Copy the firmware files directly to the of
Download your firmware package. Extract the contents directly to the of your USB drive. Do not place them inside a folder. You should see files like update.img or a collection of .bin and .img files directly on the drive. Step 3: Initiate the Flash Turn on your car stereo. Fix: Re-download firmware
Newer builds for the K2001N typically feature BT 4.2 and improved resolution support (1024x768).