Hi,
You’re right that the problem is that you do not have enough disk space to install the update:
lug 25 20:01:59 endless eos-updater[1231]: Fetch: error pulling using old code: Delta requires 2,1 GB free space, but only 784,9 MB available
lug 25 20:01:59 endless eos-updater[1231]: Changing to error state: com.endlessm.Updater.Error.Fetching, 5, Error fetching update: Delta requires 2,1 GB free space, but only 784,9 MB available
Let’s try to find a bit of extra space. Open a Terminal window. First, run this command to erase the backup copy of the previous version of Endless OS (more details here):
sudo ostree admin undeploy 1
Now run the following three commands and send us the output of each one:
df -h /
sudo du -hxd1 /home /var
ostree refs