PCIe Gen4 SSD on Pocket 3

If NVMe1.4 SSD is installed, I guess some contents of the BIOS must be changed.
Where is the document about that?
I already replace the SSD to gen.4, however my Pocket 3 could not boot as is.

Mine booted fine off of a Samsung 980 pro gen4 nvme without any bios changes just reinstalling the OS