Detection of the flash chip on this board succeeds, however reading flash contents to backup file fails as:
Reading flash... Transaction error! SSFS: SCIP=0, FDONE=1, FCERR=1, AEL=0 SSFC: SCGO=0, ACS=0, SPOP=0, COP=1, DBC=63, SME=0, SCF=0 Running OPCODE 0x03 failed at address 0x001000 (payload length was 64). Read operation failed! FAILED.
Also, superiotool returns: No Super I/O found
Perhaps that's the reason. See attached dumps for any additional details.