Release Notes

Important notes
This section contains information about firmware upgrade and system configuration that you need to know before using ThinOS
version 8.6.
Firmware upgrade and downgrade
● On Wyse 5070 Extended thin client, the AMD firmware is upgraded to a newer version. If you want to downgrade ThinOS
from 8.6 to 8.5.1, you must shut down and boot the thin client again. If you do not shut down and reboot, a black screen is
displayed on the monitor that is connected to the AMD GPU port. Also, the AMD DP port sequence is updated.
● On Wyse 5070 thin clients, the Bluetooth firmware is upgraded to a newer version from ThinOS 8.5_108. If you want to
update the thin client with the Bluetooth module from ThinOS version 8.5_107 to 8.5_108 or later, Dell recommends that you
disconnect the power cable and connect the power cable again before you reboot.
● ThinOS 8.6 stores the installed packages (except base and pcoip) in the hidden partition. When you downgrade ThinOS
firmware to previous versions, and upgrade the firmware to 8.6 again, the ThinOS device reinstalls the stored packages from
the hidden partition. You can delete the package to clean the backup data from the device.
● When you use a file server to update BIOS for Wyse 5060 and 3030 LT thin clients, the BIOS update progress bar disappears
after the BIOS update process is complete, and the system reboots after one minute. You must not manually reboot the thin
client. During reboot, a black screen is displayed for one minute, and then the device resumes the BIOS update.
● From ThinOS version 8.6, the 16-bit desktop color option is removed from Wyse 3010 and 3020 thin clients.
● From ThinOS version 8.6, the Merlin images include both RTME and Horizon packages.
● From ThinOS version 8.6, the DP audio is disabled by default on Wyse 3040 thin client.
● You must install the JVDI package to use Cisco Jabber.
● If you push Merlin images on Wyse 5010, 5040, and 7010 thin clients with 4 GB or higher flash size, the RTME and Horizon
packages are formatted.
System configuration and deployment
● USB redirection must be disabled for audio and video devices to use RTME/RTAV/SFB/JVDI. By default, the USB
redirection is disabled on ThinOS. Dell recommends that you do not modify the default settings unless you need the USB
redirection for audio and video devices.
● ThinOS BIOS policy can be configured using Wyse Management Suite Console, Wyse Management Suite group INI, Wyse
Management Suite advanced settings and FTP INI. Dell recommends that you use any one of the methods to configure the
BIOS policy. Setting the BIOS policy simultaneously using different methods may cause a policy mismatch, and the device
reboots repeatedly. This reboot loop issue is observed when you select the reboot immediately option in the BIOS policy
settings section on the Wyse Management Suite console.
● All the installed packages are deleted when you update the ThinOS image version between major releases—8.5 or 8.5.1 to
8.6—using FTP, WDM, or Wyse Management Suite.
Solution for updating firmware using FTP and WDM—Ensure that you have set the PKG install parameters in the WNOS.ini,
and the pkg files are uploaded in the directory. After the device reboot, the packages are re-installed automatically.
Solution for updating firmware using Wyse Management Suite—Wyse Management Suite App policy works only once after
the policy is created. The deleted package cannot be reinstalled using the same policy. Dell recommends that you create a
new App policy to install the package after the firmware update is complete.
● WDM vulnerability is fixed in this release. You must configure either the DHCP or the DNS option/record of the WDM server
fingerprint to automatically fetch and validate the fingerprint before checking in to the WDM server. However, there is
no impact to the ThinOS device functionality if you do not to configure the fingerprint validation environment. For more
information about how to set up fingerprint using WDM, see the Frequently asked questions section in the Dell Wyse ThinOS
Version 8.6 Administrator's Guide at www.dell.com/support.
New and enhanced features
Cisco Jabber Softphone for VDI
Cisco Jabber Softphone for VDI (JVDI) is the Unified Communications solution that is offered by Cisco for virtual deployments.
It supports audio-video conferencing, and instant messaging on the hosted virtual desktops (HVD). The Cisco Jabber Softphone
ThinOS 8.6_013
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