Install new Aura X
Using installation guide, install new Aura X SSD into your Mac
The original Apple SSD is installed into the Envoy external case. Case is included in Aura X kit but sold separate if you purchase just the Aura X SSD as a module.
Please note ONLY the Apple SSD is compatible with the Envoy case. You can not use the Aura X SSD in the Envoy case.
Restart using USB
Plug the MacOS installer USB into your Mac and restart the computer.
The Mac should boot into the MacOS Utilities page. If you see a question mark, the mac is not booting off the USB. If you see a spinning earth globe the Mac is trying to do an internet recovery. In both cases, turn off the Mac by holding down the power button. Restart the Mac holding down the option key. This will load the boot manager, you should see a yellow disk symbol called Install MacOS, click on this to boot the mac off the USB drive.
Go to Disk Utility
Initialise Aura X
The Aura X SSD has to be initialised using APFS format.
Name your new SSD, choose APFS and Erase (initialise)
Plug in Envoy
Plug the Envoy case into a spare USB port. Do not remove the MacOS installer USB.
The Envoy will now appear in Disk Utility as an external drive.
Select Aura X
In the left hand window of Disk Utility select the initialised Aura X SSD.
Click on Restore
On the top menu of Disk Utility is a restore feature. This is the Apple inbuilt cloning software.
To restore, both drives have to be the same format type (APFS).
Choose the source
Restore will pop up a window to ask for the source. This is your original SSD. Your Mac will now clone (restore) your original SSD to the new Aura X SSD.
Restart and Reset
Once the Restore has finished, you can shut down the Mac, remove all USB devices and restart the Mac.
It will boot off the new Aura X.
In system preferences, select Start Up Disk.
Unlock to make changes
Select new Aura X and restart.
This tells the Mac to boot off the new Aura X, and it stops the Mac looking for the original SSD.
Enjoy your new SSD!!