Intel example: Using a 7th generation Kaby Lake CPU on a 6th generation Skylake chipset motherboard. Example of required BIOS update: version 1.F https://www.msi.com/Motherboard/support/Z170-A-PRO
As I was building a new rig, I just ordered a z97 instead.
Also yeah, it was my fault for not properly checking before buying 4690+z87 combo, but not that weird...
Intel example: Using a 7th generation Kaby Lake CPU on a 6th generation Skylake chipset motherboard. Example of required BIOS update: version 1.F https://www.msi.com/Motherboard/support/Z170-A-PRO