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I'm using the OKdo ROCK 4C+ Starter kit - 
I'm still looking for the best image I need for my project, wich will use several GPIOs , but, before I go too deep in that research, I want to use it "as is" for some days - I had no problem to get the system working, using wifi and connecting my main PC (linux 20 Mint system) via ssh -
But I wanted to make a backup of my system, following this  unfortunately, when I run the command , I get this answer :

Command not found: resize-helper, package required: 96boards-tools-common

Do you want to apt-get install the packages? [Y/n]

If I say "Y" , then I get this :

Hit:1 bullseye-security InRelease
Hit:2 bullseye InRelease
Hit:3 bullseye-updates InRelease
Hit:4 bullseye-backports InRelease
Hit:5 bullseye InRelease
Reading package lists... Done
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
E: Unable to locate package 96boards-tools-common

I'm then unable to make a backup -

Does anybody have a solution ?


PS :  uname command responds this :

Linux rock-4c-plus 4.4.194-10-rk3399-rockchip-gf9d08dbd6762 #1 SMP Mon Oct 24 18:23:12 CST 2022 aarch64 GNU/Linux