Thanks Andzej for the quick reply.
I performed the firmware update different ways, first with the webmenu (WEBUI) from version TRB2_R_00.07.00. I also tried updating with the CLi from the same version. Also updating from the newest version (TRB2_R_00.07.03) in both ways did not fix this problem. I did all the firmware updates with the 'keep setting' option turned off.
I did try to reset the device to factory defaults but this did not work. Please come with a solution for the LEDs problem.
The device works properly and the LEDs do work because with the startup sequence those status LEDs do work just fine.
For now I did not encounter any more problems with the new firmware release.
Thanks in advance.