No $SVS found on Mb Air 2014 A1466 emc 2632

Did anyone can help me to clean this dump.
 Can't find the $SVS,
Took a dmp from GHostlyHacks repo and I got an error, can't boot on disk, it seems other users had the same issue :

ghostlyhaks.com/forum/rom-eeprom-bios-efi-uefi/350-a1466-emc-2632-macbook-air-1-4-ghz-early-2014#10955

Also, while searching "hwc" to replace the Serial on dump I took from the repo, I noticed that they don't have this : BIOS ID:      MBA61
  Built by:     root@saumon
  Date:         Tue Jun 20 07:52:53 PDT 2017
  Revision:     99.53~1 (B&I)
  Buildcave ID: 0
  ROM Version:  0099_B53

Picked up from my own dump. Can anyone tell me what is this and does it need to be in the dump ?

My dump : MBA 2014 A1466  emc2632 820-3437-B READ
Dump picked up from the forum (not the repo) that looks clean for me  : A1466_EMC 2632_unlocked
Dump picked up from repo : 2632 - 13 MBA 2014 i5 1.4

Thank for your help.

Attached your own bios dump with EFI cleared. Cheers

Hi,
Thank you !!
Can you give me a quick explain how did you do that ? 

Cheers