When installing the Sun Ray Software firmware on Sun Ray 3 Series Clients, the smart card LED will blink for approximately 40 seconds as the smart card controller firmware is being updated.

This is normal.

One indication of this problem is that the smart card LED remains on after the smart card has been removed from the Sun Ray Client.

Workaround: Reboot the Sun Ray Client.

Reference: CR 12309883

Fixed in Sun Ray Software 5.2.3 release.

When creating a new session on a Sun Ray 170 Client, the serial port device nodes are not created under the $UTDEVROOT path.

Workaround: Do not update Sun Ray 170 Clients with the Sun Ray Software 5.2 firmware if the serial port needs to be used. If you have a site with multiple Sun Ray Client models and you need to bypass the firmware upgrades on Sun Ray 170 clients, you must use individual MAC addresses to upgrade the firmware on specific clients or upgrade the firmware manually.

Reference: CR 12293607