Unable to boot install usb media

[WhiteIntel]

@P1LGRIM I had no success to get a proper image!
is there something else I can try?
greetings & thx for you help!

 

[P1LGRIM]

is there something else I can try?

You must update the firmware on your SSD before you can expect to succeed.

 

[WhiteIntel]

You must update the firmware on your SSD before you can expect to succeed.

Now I checked the firmware of my SSD on a Windows PC.
It is already the latest available firmware...

 

[P1LGRIM]

It is already the latest available firmware.

That's a good thing, you know that it is not affecting anything.

use the forum Search tool to see how others have fared - Search

Example : You may have to use bootflag agdpmod=pikera

 

[WhiteIntel]

That's a good thing, you know that it is not affecting anything.

use the forum Search tool to see how others have fared - Search

Example : You may have to use bootflag agdpmod=pikera

I tried the provided flag and changed the monitor (from 1650 pixels to 4k with displayport), now I got pictures as you can see in the screenshots. The problem is now: I can use keyboard and mouse, but I cant click on anything. With the keyboard I was able to navigate to the dialog where Diskutility, time machine recovery etc. is located, but here I´m stuck.

I tried removing WEG kext as someone in the forum wrote, change to imacpro1,1, macpro19,1 but with no difference.