Last night I contacted MSI support to tell them about my problem. To make a long story short, it looks like it is solved now.
What I did was to follow the instructions given earlier in this thread posted by doxuanminh19912c902b0 with a slight variation at step 11:
1. shut down my PC
2. disconnect the power cable
3. disconnect and remove the bridge completely
4. wait for one hour
5. re-install the bridge
6. re-connect the front I/O breakout cable
7. boot into Windows
8. at this point you should at least see the display come on and show the 'loading' screen preferably with some random numbers moving around the screen.
9. start the MSI update tool
10. when the tool is started you should be able to see the current FW version and the current data version, if you only see the current FW version you better re-do step 1-9, in that case any attempt to update the data will fail
11. update the data first (not the firmware)
12. after updating the data was finished successfully my display turned off for a slight moment and than rebooted showing the MEG logo. After the reboot was finished the system information eg. fan speed and core voltage showed again.
At previous attempts I always tried to update the firmware first, but I found out that after the firmware update somehow the update tool was reloading and after the reload the data version was not showing anymore, causing the data update after the firmware update to fail consistently. So the solution was to update the data first.
It is important to mention that MSI support told me that they didn't release any firmware or data updates until now, so it is normal that de update tool shows the same current version of the firmware and data as the one going to be installed. They told me to update Firmware and data anyway.
Hopefully this helps, please let me know if it helped you to solve the problem...