Hello!, I wantt to know if the Lenovo R500 has coreboot support without any blobs

Here it says that is supported

but

doesnt appear

and in the tree also no

Another question is if there is any tool like in the libreboot proyect to change mac address and if there is any complete video tutorial to install libreboot, because in youtube there are full videos about libreboot but for coreboot i didnt find anyone with good explanation.

Thanks for ur time!

Best Regards