its late.. 2 weeks late (me and the months of December and for that matter November and december) dont exactly mix. (i've been told i should seek help in at that time of the year again in diagnosing SADs, but happy new year 5schatten
I've been busy w/ my sort of "Personal Hell" both inner and outer since real late November,so i didnt really monitor for Updates. I went unchecked till December 31st, (new years eve when the Depression began to lift and i could ENJOY things once more) but the build i have in my Download history doesn't match your RC change logs... (so i hope it wasn't a broken-pulled build) the Filename is "LibreELEC-RPi2.arm-9.0-RR-201852-44f803a.img.gz" which seems to place this between RC3 builds "201851-1acbb17" and "201852-52323f1"
i made sure to go thru the builds i didn't recognize for any that indicated to delete something before updating. the only one i couldn't seem to do is for "RC4 201901-c30d584" and this change/deletion request: "completely reworked mupen64plus standalone -> superseeded by m64p -> delete your old mupen64plus config dir before you update!" (simply i couldn't find the folder (so i guess i should be good either way.
(Would be nice if there was a script like in the old days of XBMC on the Xbox that could check for updates and display whats new,but for here, it'd pull from Google Drive download to the Update directory , Display whats new , if anything is marked "Delete before updating" it would delete then restart. sounds too much work to make it to save a few moments of "Get up off laze-arse, check forums, read change logs for if an update Requires configs to be deleted, copy update over, Update")
but either way i hope the month of December treated you fairly and that sofar 2019 is starting off well for you!