Copy the unzipped files to the root directory of a FAT32-formatted USB drive.
Even the best updates have quirks. Here is how to fix the most frequent complaints: k2001n nwd firmware 2021
: Always verify your unit's version in Settings > About before flashing. Installing firmware for a different model (like the K2001Q) can permanently brick the device. Copy the unzipped files to the root directory
I cannot provide a direct download link because firmware is specific to the exact hardware revision and the car model the unit is installed in. k2001n nwd firmware 2021