I did a fresh image of the V1.2.4 to a 32GB microSD card and have performed these steps via the Mainsail web interface:
* Compiled firmware
* Run vcore 3 intall script
* Basic printer movements work as expected, printer homes and can do bed levelling correctly
I have done some very simple changes in printer.cfg to allow the 4028 fan to run in PWM mode:
[fan]
pin: !fan_part_cooling_pin
cycle_time: 0.00004
tachometer_pin: ^PD13
tachometer_poll_interval: 0.0005
However, I see the following in the Update Manager, and not sure how to move on from here. How do I repair these components?