Core i5 “Kaby Lake”, Core i7 “Kaby Lake”.
A 1TB Fusion drive and 2TB Fusion drive come from the box but the overall storage can be customized up to 3TB of which 1 TB goes to SSD sector. The graphics is on Radeon chip: Radeon Pro 570 with 4GB VRAM and Radeon Pro 580 with 8GB VRAM.
The range of the latest Intel 7th generation CPU includes three Core i5 Kaby Lake processors with speed of 3.4 GHz, 3.5 GHz, 3.8 GHz and one Core i7 with speed of 4.2 GHz. The iMac (27-inch, Mid 2017) includes three iterations according to the speed of the CPU it is powered by and one corporative iteration based on the Core i7 CPU. The FaceTime HD cam, a microphone and two speakers are the multimedia features of the “Core i5” 21.5-inch iMac (mid 2017/ Kaby Lake). The connectivity includes 2 Thunderbolt 3 (USB-C) ports and 4 USB 3 ports while the wireless connectivity embraces AirPort Extreme 802.11a/b/g/n/ac, Gigabit Ethernet, Bluetooth 4.2. 8 GB of soldered RAM, a 1TB hard drive come from the box but the iterations with the 1 TB Fusion drive or 256 GB SSD are available for customization. The iMac (21.5-inch, Mid 2017) is powered by the latest Intel 7th generation CPU with the integrated GPU Iris Plus 640. But at least downgrading to v3.60 worked for me. I'm not entirely sure, but I think something can be changed in ist smbios section, to make it work with BIOS v3.61. A menu should appear to allow you to flash the BIOS from the USB stick.Īlternatively look for the procedure online or in the service manual. It's near the BIOS battery, you need to short it with a jumper, with the Z600 turned off of course.Ĭonnect the USB stick and power on the Z600. Then you need to locate the jumper location that forces emergency bootblock recovery. First you need a USB stick/thumbdrive on which to copy the BIOS image, directly to the root of the drive, in fact I recommend you format the disk before this. So instead I used the bootblock emergency recovery method. It didn't work from BIOS itself, using the flash menu option. It looks like HP doesn't allow you to downgrade BIOS. However downgrading to v3.60 was not easy. It didn't work, when it came to boot into the installer it would just crash and reboot.
I had previously updated to BIOS v3.61, so I tried to install MacOS this way. I successfully installed High Sierra using the instructions in this thread. Building a CustoMac Hackintosh: Buyer's Guide