How do I upgrade Leap Micro 5.2 to 5.3?

English Install/Boot/Login
#1

I’m attempting to upgrade my box from Leap Micro 5.2 to 5.3. I couldn’t find openSUSE Leap Micro upgrade instructions, but I’ve found the SLE Micro upgrade instructions (which I think apply here): https://documentation.suse.com/sle-micro/5.3/single-html/SLE-Micro-upgrade/#book-upgrade-slemicro

I have an unregistered system, so I believe this is the relevant part:
If your system is not registered, proceed as follows:
Procedure 3.2: Upgrading an unregistered system

  1. Change the URL of the update repositories to point to the 5.3.
  2. Run the following command:
    transactional-update dup

I’m stuck on step 1 there: “Change the URL of the update repositories to point to the 5.3”. On my system those repository files use “$releasever” variables:

# cat /etc/zypp/repos.d/*.repo
[repo-main]
name=Leap Micro Main Repository
enabled=1
autorefresh=1
baseurl=https://download.opensuse.org/distribution/leap-micro/$releasever/product/repo/Leap-Micro-$releasever-x86_64-Media/
type=rpm-md
keeppackages=0
[repo-sle-update]
name=SLE Micro Update Repository
enabled=1
autorefresh=1
baseurl=https://download.opensuse.org/update/leap-micro/$releasever/sle/
path=/
type=rpm-md
keeppackages=0

How do I go about upgrading the release version?

#2

I found some instructions for upgrading Leap transactional server: https://feldspaten.org/2021/10/01/Upgrade-Transactional-Leap/

Applying that technique to Leap Micro, I found that this worked for me:

transactional-update shell
zypper --releasever=5.3 dup
exit

Reboot.