Hi @bonusbartus welcome to the /e/ forum. As far as I can see, the filesystem size error (which has been part of the blocker for /e/) is probably not connected directly; where both devices share the devicecode ‘bacon’, this has to be accommodated within the build. If you have the device and you could test or examine this experiment, Experimental Custom build 'extra_minimal_apps' for Oneplus One - bacon, I would love to look into this deeper.
(I do not think bacon will be on the release plan for /e/ R soon !)