Carlos E. R. composed on 2021-09-08 19:14 (UTC+0200):

Felix Miata wrote:

cagsm composed on 2021-09-08 14:25 (UTC+0200):

for a dup from 15.2 to 15.3, would it make sense or is it possible to
even add those special 15.3 repos before? backports and SLE15updates
repo?

I've been doing it, so yes, of course.

Can then someone please specify the full URL of those extra
repositories? (apparently 3). This information is not given in
<https://en.opensuse.org/SDB:System_upgrade>. Rather it seems to
recommend adding them later in an automatic update.

A "zypper lr --details" would do.

											
[UpdateBP]
autorefresh=1
baseurl=http://download.opensuse.org/update/leap/15.3/backports/
enabled=1
gpgcheck=1
gpgkey=https://download.opensuse.org/update/leap/15.3/backports/repodata/repomd.xml.key
keeppackages=0
name=UpdateBP
type=rpm-md

[UpdateSLE]
autorefresh=1
baseurl=http://download.opensuse.org/update/leap/15.3/sle/
enabled=1
keeppackages=0
name=UpdateSLE
type=NONE

Thanks.

The wiki says:

https://en.opensuse.org/SDB:System_upgrade

The openSUSE Leap 15.3 adds two additional update repositories one for openSUSE Backports and one for SUSE Linux Enterprise, these additional repositories are used during online installation and delivered to Leap 15.3 system via a maintenance update of openSUSE-release with Leap 15.3 GA. This is covered in depth in the Release notes.

But does not say which they are.

-- 
Saludos/Cheers
       Carlos E. R.