smbios is off

[esmith1966]

the latest OC release does not permit the proper SMBIOS setting...

I have tried repeatedly to set this to iMac 19,1

BUT the OC always inserts a different setting

This is what the systems says now :

Model Name: Mac
Model Identifier: A263,8201
Processor Name: Quad-Core Intel Core i3
Processor Speed: 3.6 GHz
Number of Processors: 1
Total Number of Cores: 4
L2 Cache (per Core): 256 KB
L3 Cache: 6 MB
Memory: 64 GB
System Firmware Version: MB11.88Z.0061.B03.0610121324
OS Loader Version: 540.80.2~5
SMC Version (system): 1.4f12
Serial Number (system): System Serial Number
Hardware UUID: CBB1A15F-5710-E8DF-52FB-049226C0C5A2
Provisioning UDID: CBB1A15F-5710-E8DF-52FB-049226C0C5A2

How do I fix this?

[esmith1966]

I zapped nvram but it says now :

Model Name: Mac
Model Identifier: A263,8201
Processor Name: Unknown
Processor Speed: 3.6 GHz
Number of Processors: 1
Total Number of Cores: 4
L2 Cache (per Core): 256 KB
L3 Cache: 6 MB
Memory: 64 GB
OS Loader Version: 540.80.2~5
SMC Version (system): 1.4f12
Serial Number (system): Unavailable
Hardware UUID: CBB1A15F-5710-E8DF-52FB-049226C0C5A2
Provisioning UDID: CBB1A15F-5710-E8DF-52FB-049226C0C5A2

[esmith1966]

Please help