To @Erdmi and all VIM3L who where lucky and bricked the device by updating to 9.2.3: the error is fixed and the release tar file got updated on the release download page.
If you have already updated and the system is not booting anymore please prepare a external boot media with new 9.2.3 image like by uSD or USB and boot VIM3L. Open a SSH connection and type:
mkdir /media/ce_flash
mount /dev/coreelec /media/ce_flash
cp /flash/cfgload /media/ce_flash/cfgload
sync
Then power off the device, remove exernal boot media and the VIM3L should boot again from internal eMMC.