Read a related article – 5 Jan 2022 – Yaesu FTDX10 deep-dive review
In early April 2021 Yaesu issued a new firmware version 1.05 to address a few issues in V 1.04. This update turned out to be quite a disaster for some hams causing their radio all sorts of problems. Yaesu were quick to address this and released version 1.06 a few days later.
It turns out that the version 1.06 is more of a downgrade than upgrade over 1.04, and this is why.
In V1.04 you could change the band by pressing the BAND key and selecting the band on the touch panel. You could also press the BAND key, turn the MPVD ring (multi purpose VFO outer dial) to the desired band then press the FUNC knob and your radio changes the band. Both of these functions still work in V1.06.
However, in V1.04 you could press the BAND key, turn the MPVD ring to the desired band and after 2 seconds the radio changes the band. This has been removed in V1.06.
Interestingly the same functionality for MODE selection has survived the cull and is still available in V1.06.
(Update: the MPVD band change functionality has been restored in V1.08 in May 2021)