I can´t install android on the eMMC

Hi, I’m trying to install android on the eMMC of a radxa zero (2gb ram and 8gb eMMC). I have all the files from the official android image in the folder where ADB and FASTBOOT are, but It always get the same error when I execute “flash-all.bat”: fastboot cannot load any .img files, can someone help me?. The flash-all.bat log:

Hi @jhon,
Please remove this line: fastboot reboot-bootloader from flash-all.bat

Hi, I’ve already tried that, I read it in another thread on this forum but it doesn’t work.

Can you check if this directory has *.img file?

The solution is open a terminal shell on the folder where is the “flash-all.bat”, and then run the script.

Another question, in the official version of android I want to unlock the bootloader but when I activate the developer options I go to its folder and inside it tells me that “Developer options are not available for this user”. How can I unlock it?

I have tried going to android accounts but it won’t let me add any accounts.