In any case, a big thanks to Jackie_w and DNSB

This settles the issue for my Glo
Now for my AuraHD I think I'm screwed for the time being. You see I just updated the software cause I was on 2.5.1 which, we found throughout this thread is not compatible with the patch, to 2.8.1
Unfortunately I just noticed it has installed 2.8.1 (b2c05cda0e,
9/20/13) which according to some posts is not compatible with the patch.
So it turns out that Kobo not only never cared to fix this wasted space issue by themselves, but they also are trying to prevent patch makers like our Russian friend to help us out with this issue.
Is the Kobo management plain evil or what ?