update unsupported mac with OS X lion to APFS 10.15 Please confirm if one can help me update unsupported mac book late 2008
HFS+ to APFS
Last 2008
current OS X Lion 
Mac book 5.1 
Omt; Cpre 2 Duo processor 
2 GHZ 
1 processor 
2 cores 
L2 cache 3mb
Mem 2gb 
Bus speed 1.07 ghz
boot Rom Version MB51.007d.B03 
Serial number W891......c8QR
Hardware UUID 
Sudden Motion sensor 
State enabled
There is software on the logic board which is referred to as firmware. This is the software that first executes when a Mac starts up. The firmware is capable of reading partitions using various formats such as JHFS+. When Apple introduced the APFS format, Apple only provided firmware updates for certain Mac models. Older Macs can not boot from APFS formatted partitions, because the firmware does not recognize the APFS format. Your Mac is one such model. There is no way to fix this. The macOS 10.15 operating system can only boot from APFS formatted partitions.