CP690 stuck at initialising

[Rocketfuel100]

Hello community,

I am referring to this thread: http://forum.yealink.com/forum/showthread.php?tid=43811

I have two CP960 phones here that won't stop initializing. Is there someone here who could help me out with a functioning version of the three needed files? (CP690.bin, CP690.rfs CP960.rom)
I tried the older versions mentioned in the thread I linked above, but it didn't work.

Our phones here had the Teams firmware version installed. At least one has version 73.15.1.100.

I am not familiar with the whole conference phone system here, but I got the task to update the phones and make them usable again. I am grateful for any advice really.

Thank you!