Same as here, perform the instructions on extracting and joining the images.
But first get a reading of the SPI as it is, with the programmer, doesn’t matter the corruption, we need to save as much from the mage regarding original board data, SN, DMI, MAC, UUID etc… assuming that you don’t have any previous backups.
Good luck.
EDIT: You should, the data may be on the 128 but i don’t own this model to assure you this info.
2 more threads, same issue related
[Solved!] Bricked ASUS ROG Z490 Board after USB BIOS-Flashback - Special Topics / Intel Management Engine - Win-Raid Forum (level1techs.com)