More information :

Step 1. install lastest bridgeos with configurator.

Step 2. go to recovery screen but don’t connect wifi or do anything, put device in dfu mode and use t2 ramdisk tool connected to other mac

Step 3. activate the device

Compatible with:

imac (retina 5k, 27-inch, 2020)

imac pro

mac pro (2019)

mac pro (rack, 2019)

mac mini (2018)

macbook air (retina, 13-inch, 2020)

macbook air (retina, 13-inch, 2019)

macbook air (retina, 13-inch, 2018)

macbook pro (13-inch, 2020, two thunderbolt 3 ports)

macbook pro (13-inch, 2020, four thunderbolt 3 ports)

macbook pro (16-inch, 2019)

macbook pro (13-inch, 2019, two thunderbolt 3 ports)

macbook pro (15-inch, 2019)

macbook pro (13-inch, 2019, four thunderbolt 3 ports)

macbook pro (15-inch, 2018)

macbook pro (13-inch, 2018, four thunderbolt 3 ports)

enjoy ;

https://www.mediafire.com/file/1byjnite59lhbif/hfz_activator_t2_ramdisk_v1.0_installer.pkg/file