The following are the steps.
1. Opened the CN60 and removed the write protect screw
2. Used the same time to upgrade from 2x 2GB ram modules to 1x 8GB
3. Validated old ChromeOS booted.
4. Powered off.
5. Pushed recovery pin in and while holding it in turned the system on to enter a recovery mode.
6. Control-D to enter developer mode and remove request write protect off
7. Press recovery button again to turn write protect off.
8. ChromeOS clears the local data by itself.
9. ChromeOS says "preparing developer mode" and says not to turn off the system until it has restarted by itself.
10. The system reboots into a developer mode by itself.
11. Ctrl-Alt-F2 on a keyboard to switch to a text based console
12. Enter "chronos" as the login.
13. Ensure that the IP address is assigned - i'm using wired port.
14. Download and run mrchromebox.tech Chromebook/chromebox openfirmware de-googler:
curl -LO mrchromebox.tech/firmware-util.sh
sudo install -Dt /usr/local/bin -m 755 firmware-util.sh
sudo firmware-util.sh
Select 2 to install a full uefi firmware.
system rebooted itself and said there was nothing to boot.
15. Create a ChromeOS Flex USB image on at least 8G USB stick - I used 16G - you cannot use Linux. You MUST use Windows. To do this in Chrome, got o Chrome Web store and install "Chromebook Recovery Utilities" by Google. Run them. Select Google as the Vendor and Chrome OS Flex as the USB. This process is long. During one of the stages the USB creator says that it did over 100% of work and there is a negative number of seconds remaining. Writes to the USB take a LONG time.
16. Plugin the USB into the CN60. Go to the boot menu.
17. Boot off the USB.
18. See the Chrome logo on a white screen
19. Eventually see CloudRun 2.0 installation screen
20. Select install to disk.
21. Wait for the install. The system will turn itself off when it is done.
22. Pull out your USB.
23. Boot off the disk.
24. Setup your main account - i connected it to the a Business Workspace account. It worked.