Updating to the latest Insyde BIOS-UEFI using FreeDOS/MS-DOS bootable USB in HP 15-BS00X series?

[COE2k14]

After a previous experience of BIOS-UEFI update failure with a HP-15-BS576TX, when updating using Windows installer, I am wondering whether more technically aware users can update reliably, using a USB drive formatted with Freedos or DOS and extracted Insyde BIOS-UEFI binaries? We can make a FreeDos bootable usb using syslinux or some other options (Win PE?). Is there any how-to or details available? With the the extracted files of the BIOS-UEFI sp80452.exe shows a Insydeflash.exe, which is clearly, a DOS executable.

Insydeflash.exe: MS-DOS executable, COFF for MS-DOS, DJGPP go32 DOS extender

Another doubt is, if suppose you have firmware F.22  on a laptop and the latest is F.35, will there a need to flash the intermediate BIOS-UEFI updates (in this case it is F.24) in succession?

BTW, the BIOS-UEFI extracted files all looks like they are DOS executables.

:~$ file *.*

08328.bin: data
0832D.bin: data
CrisisKeyDLL.dll: PE32 executable (DLL) (GUI) Intel 80386, for MS Windows
FlsHookDll.dll: PE32 executable (DLL) (GUI) Intel 80386, for MS Windows
FlsHook.exe: PE32 executable (GUI) Intel 80386, for MS Windows
FWUpdLcl.exe: PE32 executable (console) Intel 80386, for MS Windows
InsydeFlash.exe: PE32 executable (GUI) Intel 80386, for MS Windows
iscflash.dll: PE32 executable (DLL) (GUI) Intel 80386, for MS Windows
iscflash.sys: PE32 executable (native) Intel 80386, for MS Windows
iscflashx64.sys: PE32+ executable (native) x86-64, for MS Windows
platform.ini: ASCII text, with CRLF line terminators

:~/Insydeflash/CrisisFolder $

CryptRSA32.efi: MS-DOS executable
CryptRSA.efi: MS-DOS executable
HpBiosMgmt.efi: MS-DOS executable
HpBiosMgmt.s09: data
HpBiosMgmt.s12: data
HpBiosMgmt.s14: data
HpBiosUpdate.efi: MS-DOS executable
HpBiosUpdate.s09: data
HpBiosUpdate.s12: data
HpBiosUpdate.s14: data

Also, the motherboard of the laptop is 832B and if, the installer will identify the board and flash the necessary update, as there ar 08328.bin and 0832D.bin listed.