G16 7630 (BIOS v1.23 ??)

Greetings,

I currenty have two identical G16 7630 laptops. One is loaded with BIOS v1.22, but the other is loaded with v1.23. 

I cannot find any information whatsoever on Dell's driver page for the 7630 concerning BIOS v1.23. It's as if v1.23 does not exist, but obviously must exist. How did this laptop come loaded with a BIOS that does not exist?

Due to work-related procedural compliance we must have the two laptops BIOSs match, but Dell does not allow downgrading one from v1.23 to v1.22 (downgrade fails with a "downgrade not supported" error). We also cannot upgrade the one with v1.22 to v1.23 because the BIOS does not exist on the driver support page (only v1.22 exists as the latest)

How can we resolve this? Where is v1.23 downloadable?