SMBIOS change fixes JPEG issue, but can't authenticate iMessage

I'm really struggling to understand what I'm doing wrong here. I've had this JPG issue for ages, even though I have a headless ID iMac14,2, enable iGPU with enough ram and tried NOVAJPG kext.

I tried to change my SMBIOS to iMac Pro 1, 1 and instantly my JPG issue was fixed. But I can't use iMessgage (iCloud is fine). I'm assuming it has something to do with my serial numbers? I've since gone back to the old PLIST but I'd love to get JPG previews working.

Can anyone shed light on what I'm missing?

submitted by /u/Sydney_Gamer
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