New problem with 2.2.0?

I just updated my card fw and Samsung sw to 2.2.0
Trying to write cert via UART but after selected the cert, it went straight to error Writing certificate failed without verifying the cert. I didn’t have this issue before. Anyone else experiencing this?

Perform the following steps:
1. Connect phone via UART cable to the Box.
2. Note: phone screen must be active
Connecting to phone, please wait…
Writing Certificate failed