SFOS 4.5.0 switches RPM compression. What does that mean for existing RPMs?

Hello! I am trying to “zypper up” my sfos running on scorpion-windy within 3.4.0.24, but cannot proceed because many packages are affected by seemingly zstd conpression,

( 1/31) Installing: droid-hal-version-scorpion_windy-0.0.1+master.20180915104950.5c60ac8-1.11.10.jolla.armv7hl ..........................................................................................................................................................[error]
Installation of droid-hal-version-scorpion_windy-0.0.1+master.20180915104950.5c60ac8-1.11.10.jolla.armv7hl failed:
Error: Subprocess failed. Error: RPM failed: error: unpacking of archive failed: cpio: Bad magic
error: droid-hal-version-scorpion_windy-0.0.1+master.20180915104950.5c60ac8-1.11.10.jolla.armv7hl: install failed
error: droid-hal-version-scorpion_windy-0.0.1+master.20180915104950.5c60ac8-1.11.9.jolla.armv7hl: erase skipped

Abort, retry, ignore? [a/r/i] (a):

[nemo@sfos-scorpion-windy ~]$ rpm -q --qf "%{PAYLOADCOMPRESSOR} %{PAYLOADFLAGS}\n" /var/cache/pk-zypp-cache/packages/adaptation-community/armv7hl/droid-hal-version-scorpion_windy-0.0.1+master.20180915104950.5c60ac8-1.11.10.jolla.armv7hl.rpm 
zstd 19

and even if I update rpm to 4.16.1.3 (which should have supported zstd) could not make these packages installable:

[nemo@sfos-scorpion-windy ~]$ LANG=en_US.UTF-8 zypper lu
Loading repository data...
Reading installed packages...
S | Repository                  | Name                                                 | Current Version                                         | Available Version                                       | Arch   
--+-----------------------------+------------------------------------------------------+---------------------------------------------------------+---------------------------------------------------------+--------
v | adaptation-community-common | bluetooth-rfkill-event-hciattach                     | 1.0.9-1.2.8.jolla                                       | 1.0.9-1.2.9.jolla                                       | armv7hl
v | adaptation-community-common | community-adaptation-devel                           | 0.0.3-1.9.6.jolla                                       | 0.0.3-1.9.7.jolla                                       | armv7hl
v | adaptation-community        | droid-hal-version-scorpion_windy                     | 0.0.1+master.20180915104950.5c60ac8-1.11.9.jolla        | 0.0.1+master.20180915104950.5c60ac8-1.11.10.jolla       | armv7hl
v | adaptation-community        | geoclue-provider-hybris-hal                          | 0.2.22-1.5.17.jolla                                     | 0.2.22-1.5.18.jolla                                     | armv7hl
v | native-common               | gpsd                                                 | 3.23+git2-1.8.5.jolla                                   | 3.23+git2-1.8.6.jolla                                   | armv7hl
v | native-common               | gstreamer1.0-vaapi                                   | 1.18.5-1.6.1.jolla                                      | 1.18.5-1.6.3.jolla                                      | armv7hl
v | adaptation-community        | hybris-libsensorfw-qt5-hal                           | 0.11.4-1.6.11.jolla                                     | 0.11.4-1.6.12.jolla                                     | armv7hl
v | native-common               | kernel-headers                                       | 5.4.23-1.2.11.jolla                                     | 5.4.23-1.2.12.jolla                                     | armv7hl
v | native-common               | libdrm                                               | 2.4.110+git1-1.7.4.jolla                                | 2.4.110+git1-1.7.5.jolla                                | armv7hl
v | native-common               | libgps                                               | 3.23+git2-1.8.5.jolla                                   | 3.23+git2-1.8.6.jolla                                   | armv7hl
v | adaptation-community        | libhybris                                            | 0.0.5.33.tama.1-1.6.8.jolla                             | 0.0.5.33.tama.1-1.6.9.jolla                             | armv7hl
v | adaptation-community        | libhybris-libEGL                                     | 0.0.5.33.tama.1-1.6.8.jolla                             | 0.0.5.33.tama.1-1.6.9.jolla                             | armv7hl
v | adaptation-community        | libhybris-libGLESv2                                  | 0.0.5.33.tama.1-1.6.8.jolla                             | 0.0.5.33.tama.1-1.6.9.jolla                             | armv7hl
v | adaptation-community        | libhybris-libOpenCL                                  | 0.0.5.33.tama.1-1.6.8.jolla                             | 0.0.5.33.tama.1-1.6.9.jolla                             | armv7hl
v | adaptation-community        | libhybris-libhardware                                | 0.0.5.33.tama.1-1.6.8.jolla                             | 0.0.5.33.tama.1-1.6.9.jolla                             | armv7hl
v | adaptation-community        | libhybris-libnfc                                     | 0.0.5.33.tama.1-1.6.8.jolla                             | 0.0.5.33.tama.1-1.6.9.jolla                             | armv7hl
v | adaptation-community        | libhybris-libsync                                    | 0.0.5.33.tama.1-1.6.8.jolla                             | 0.0.5.33.tama.1-1.6.9.jolla                             | armv7hl
v | adaptation-community        | libhybris-libvibrator                                | 0.0.5.33.tama.1-1.6.8.jolla                             | 0.0.5.33.tama.1-1.6.9.jolla                             | armv7hl
v | adaptation-community        | libhybris-libwayland-egl                             | 0.0.5.33.tama.1-1.6.8.jolla                             | 0.0.5.33.tama.1-1.6.9.jolla                             | armv7hl
v | adaptation-community        | libhybris-tests                                      | 0.0.5.33.tama.1-1.6.8.jolla                             | 0.0.5.33.tama.1-1.6.9.jolla                             | armv7hl
v | native-common               | libva                                                | 2.6.1+master.20200301232537.48b1b74-1.5.35.jolla        | 2.6.1+master.20200301232537.48b1b74-1.5.37.jolla        | armv7hl
v | adaptation-community-common | mce-plugin-libhybris                                 | 1.14.1-1.5.10.jolla                                     | 1.14.5-1.3.1.jolla                                      | armv7hl
v | native-common               | qt5-qtdeclarative-import-multimedia                  | 5.6.2+git19+v4l.20201017112737.1.gf3a60a78-1.3.35.jolla | 5.6.2+git19+v4l.20201017112737.1.gf3a60a78-1.3.37.jolla | armv7hl
v | native-common               | qt5-qtmultimedia                                     | 5.6.2+git19+v4l.20201017112737.1.gf3a60a78-1.3.35.jolla | 5.6.2+git19+v4l.20201017112737.1.gf3a60a78-1.3.37.jolla | armv7hl
v | native-common               | qt5-qtmultimedia-gsttools                            | 5.6.2+git19+v4l.20201017112737.1.gf3a60a78-1.3.35.jolla | 5.6.2+git19+v4l.20201017112737.1.gf3a60a78-1.3.37.jolla | armv7hl
v | native-common               | qt5-qtmultimedia-plugin-audio-pulseaudio             | 5.6.2+git19+v4l.20201017112737.1.gf3a60a78-1.3.35.jolla | 5.6.2+git19+v4l.20201017112737.1.gf3a60a78-1.3.37.jolla | armv7hl
v | native-common               | qt5-qtmultimedia-plugin-mediaservice-gstcamerabin    | 5.6.2+git19+v4l.20201017112737.1.gf3a60a78-1.3.35.jolla | 5.6.2+git19+v4l.20201017112737.1.gf3a60a78-1.3.37.jolla | armv7hl
v | native-common               | qt5-qtmultimedia-plugin-mediaservice-gstmediacapture | 5.6.2+git19+v4l.20201017112737.1.gf3a60a78-1.3.35.jolla | 5.6.2+git19+v4l.20201017112737.1.gf3a60a78-1.3.37.jolla | armv7hl
v | native-common               | qt5-qtmultimedia-plugin-mediaservice-gstmediaplayer  | 5.6.2+git19+v4l.20201017112737.1.gf3a60a78-1.3.35.jolla | 5.6.2+git19+v4l.20201017112737.1.gf3a60a78-1.3.37.jolla | armv7hl
v | native-common               | qt5-qtmultimedia-plugin-resourcepolicy-resourceqt    | 5.6.2+git19+v4l.20201017112737.1.gf3a60a78-1.3.35.jolla | 5.6.2+git19+v4l.20201017112737.1.gf3a60a78-1.3.37.jolla | armv7hl
v | native-common               | qtscenegraph-adaptation                              | 0.7.6-1.3.18.jolla                                      | 0.7.6-1.3.20.jolla                                      | armv7hl

You can see that many shared repositories are affected. Could you have packages in these repositories rebuilt to a compatible format, or is there a way to update rpm and related tools to make zstd-compressed packages installable on old systems?