Problems with upgrading from 20 to 22

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Hey there!

I had RFRemix installation of Fedora 20 on my PC.

I removed all rfremix repos before update. Then i updated the system, following the guide.

When i run sudo dnf distro-sync i've got lots of "none of the providers can be installed" errors. If i run it with --allowerasing flag, i've got

Error: The operation would result in removing the booted kernel: kernel-core-4.4.10-200.fc22.x86_6

I checked my release, and it is still Fedora 20!

> cat /etc/*-release
Fedora release 20 (Heisenbug)
NAME=Fedora
VERSION="20 (Heisenbug)"
ID=rfremix
ID_LIKE=fedora
VERSION_ID=20
PRETTY_NAME="RFRemix 20 (Heisenbug)"
ANSI_COLOR="0;34"
CPE_NAME="cpe:/o:fedoraproject:fedora:20"
HOME_URL="https://fedoraproject.org/"
BUG_REPORT_URL="https://bugzilla.redhat.com/"
REDHAT_BUGZILLA_PRODUCT="Fedora"
REDHAT_BUGZILLA_PRODUCT_VERSION=20
REDHAT_SUPPORT_PRODUCT="Fedora"
REDHAT_SUPPORT_PRODUCT_VERSION=20
Fedora release 20 (Heisenbug)
Fedora release 20 (Heisenbug)

However, i have only fresh kernels installed:

> dnf list installed | grep kernel
abrt-addon-kerneloops.x86_64          2.6.1-10.fc22                @@commandline
erlang-kernel.x86_64                  17.4-7.fc22                  @@commandline
kernel.x86_64                         4.2.3-200.fc22               @updates     
kernel.x86_64                         4.4.10-200.fc22              @@commandline
kernel-core.x86_64                    4.2.3-200.fc22               @updates     
kernel-core.x86_64                    4.4.10-200.fc22              @@commandline
kernel-devel.x86_64                   4.2.3-200.fc22               @updates     
kernel-devel.x86_64                   4.4.10-200.fc22              @@commandline
kernel-headers.x86_64                 4.4.10-200.fc22              @@commandline
kernel-modules.x86_64                 4.2.3-200.fc22               @updates     
kernel-modules.x86_64                 4.4.10-200.fc22              @@commandline
kernel-modules-extra.x86_64           4.2.3-200.fc22               @updates     
kernel-modules-extra.x86_64           4.4.10-200.fc22              @@commandline
libreport-plugin-kerneloops.x86_64    2.6.4-1.fc22                 @@commandline

What I need to do, to complete my update?