On the March 9th, 2018, at the European portal a new(er) version of the 5.5.3 firmware build 171025 has been issued.
Also a newer version 5.5.4 build 171206 (the same as the one published at the UK portal) has been posted.
There is another thread confirming live view problems from some users with the 5.5.4 firmware.
Also a newer version 5.5.4 build 171206 (the same as the one published at the UK portal) has been posted.
There is another thread confirming live view problems from some users with the 5.5.4 firmware.