This is the Mac OS FW application to address discoloration
1.) Connect hub to a host computer. Plug in HDMI cable to the HDMI port nearest to Ethernet port, and have the other end connected to HDMI display monitor.
2.) The FW file Cust.hex and OCM.hex are attached (at the bottom of the page), please click at "Download" and save it into a computer. Also click download at the FW application Phl_Billboard_Update_Tool_V0.7_Revise.zip to a host computer
3.) After the FW application is downloaded, please double click to run it. The warning message below will pop up.
4.) Please go to System Preferences > Security & Privacy > at the General > Click the lock to make changes > click Open Anyway to allow Phl_Billboard_Update_Tool to run
5.) The FW application window below will be shown on screen
6.) Click "Detect" to show the current FW version on the hub, which will be 1.5.09
7.) Click "Browse" to choose the OCM.hex and Cost.hex file accordingly.
After the OCM and Cost hex files are in placed, click OCM update first.
8.) After the OCM update is completed, it will display "verify success / verify flash finished" inside the message box. After that, click "Cust Update" next.
9.) After the "Cust Update" is completed with the message of "Writing customer define data to Billboard", click "Exit"
10.) Replug the hub and relaunch the Phl_Billboard_Update app. Click "Detect" the FW version should show 1.5.16 now.