Hi Bas,

Thank you for your answer. I dont know how to upgrade the yocto by the way. I am using the BSP of my IMX6 Board, given by the constructor. 
Anyway.

I tought that the purpose of the files firmware-imx.inc and the firmware-imx_5.4.bb is to download the file  firmware-im-5.4.bin and firmware-im-5.4.bin.done.  So i just put the target link to dowload the file .bin. 

So i need to change the url ? 
What is the exactly link Url for this files ?
Is it https://github.com/NXP/imx-firmware ?

Best regards