I accidentally erased the MAC address from the network card and because of this I can’t load the OS without closing contacts 23 and 25. The forums say that you need to return the old MAC address from the network card in order to start loading the OS, the MAC is generated by a special developer program according to the document code with board in the package, in my package the only code is: WM0014. Please solve my problem, it is not possible to use the device in full functionality.
Manage to solve the problem with generating a MAC address for rock pi 4
This is not true. The mac address is nothing todo with the OS flashing. Please check other reasons. You can clean the SPI flash first, following the instructions below:
https://wiki.radxa.com/Rockpi4/dev/spi-install#Erase_images_on_SPI_flash_on_ROCK_.28Pi.29_4