Banana PI R4 - unable to install/update packages

Hi - I have been successfully running Opwnwrt on my Banapi r4. I usually updated with Attended Sysupgrade. I attempted to upgrade this am, but there were a host of errors and I had to do it manually. I downloaded OpenWrt SNAPSHOT, r28056-40b8fbaa97 file and updated via luci. Since then I have been unable to install any packages as the /etc/opkg/distfeeds.conf file is empty, I have tried to add :

src/gz openwrt_core https://downloads.openwrt.org/snapshots/targets/mediatek/filogic/packages
src/gz openwrt_base https://downloads.openwrt.org/snapshots/packages/aarch64_cortex-a53/base
src/gz openwrt_luci https://downloads.openwrt.org/snapshots/packages/aarch64_cortex-a53/luci

when I run opkg update, I get :

Downloading https://downloads.openwrt.org/snapshots/targets/mediatek/filogic/packages/Packages.gz
*** Failed to download the package list from https://downloads.openwrt.org/snapshots/targets/mediatek/filogic/packages/Packages.gz

Downloading https://downloads.openwrt.org/snapshots/packages/aarch64_cortex-a53/base/Packages.gz
Updated list of available packages in /var/opkg-lists/openwrt_base
Downloading https://downloads.openwrt.org/snapshots/packages/aarch64_cortex-a53/base/Packages.sig
Signature check failed.
Remove wrong Signature file.
Downloading https://downloads.openwrt.org/snapshots/packages/aarch64_cortex-a53/luci/Packages.gz
Updated list of available packages in /var/opkg-lists/openwrt_luci
Downloading https://downloads.openwrt.org/snapshots/packages/aarch64_cortex-a53/luci/Packages.sig
Signature check failed.
Remove wrong Signature file.
Downloading https://downloads.openwrt.org/snapshots/packages/aarch64_cortex-a53/packages/Packages.gz
Updated list of available packages in /var/opkg-lists/openwrt_packages
Downloading https://downloads.openwrt.org/snapshots/packages/aarch64_cortex-a53/packages/Packages.sig
Signature check failed.
Remove wrong Signature file.
Collected errors:
 * opkg_download: Failed to download https://downloads.openwrt.org/snapshots/targets/mediatek/filogic/packages/Packages.gz, wget returned 8.

Can someone help as I am stuck..

opkg is no longer used for package management in snapshots, apk has replaced it. The future: opkg vs apk

Thanks for the quick response - I have removed the /etc/opkg/distfeeds.conf and tried

apk update : ` apk update
fetch https://downloads.openwrt.org/snapshots/targets/mediatek/filogic/packages/packages.adb
fetch https://downloads.openwrt.org/snapshots/packages/aarch64_cortex-a53/base/packages.adb
WARNING: updating and opening https://downloads.openwrt.org/snapshots/packages/aarch64_cortex-a53/base/packages.adb: remote server returned error (try 'apk update')
fetch https://downloads.openwrt.org/snapshots/targets/mediatek/filogic/kmods/6.6.60-1-0561031e21f60f05c8f540bffb723036/packages.adb
fetch https://downloads.openwrt.org/snapshots/packages/aarch64_cortex-a53/luci/packages.adb
WARNING: updating and opening https://downloads.openwrt.org/snapshots/packages/aarch64_cortex-a53/luci/packages.adb: remote server returned error (try 'apk update')
fetch https://downloads.openwrt.org/snapshots/packages/aarch64_cortex-a53/packages/packages.adb
WARNING: updating and opening https://downloads.openwrt.org/snapshots/packages/aarch64_cortex-a53/packages/packages.adb: remote server returned error (try 'apk update')
fetch https://downloads.openwrt.org/snapshots/packages/aarch64_cortex-a53/routing/packages.adb
WARNING: updating and opening https://downloads.openwrt.org/snapshots/packages/aarch64_cortex-a53/routing/packages.adb: remote server returned error (try 'apk update')
fetch https://downloads.openwrt.org/snapshots/packages/aarch64_cortex-a53/telephony/packages.adb
WARNING: updating and opening https://downloads.openwrt.org/snapshots/packages/aarch64_cortex-a53/telephony/packages.adb: remote server returned error (try 'apk update')
 [https://downloads.openwrt.org/snapshots/targets/mediatek/filogic/packages/packages.adb]
 [https://downloads.openwrt.org/snapshots/targets/mediatek/filogic/kmods/6.6.60-1-0561031e21f60f05c8f540bffb723036/packages.adb]
5 unavailable, 0 stale; 1191 distinct packages available
`
When I try to add luci - `ERROR: unable to select packages:
  luci (no such package):
    required by: world[luci]

`I am also unable to install ethtool

It may take a few days or a week for all the package builds to get done.