So a small update to explain the madness.
First of all, forget the instruction in section “Upgrade the linux-image-current-sunxi” of my previous post.
For the moment, i have fixed the problem like that in order to have yunohost 11 beta (with an encrypted device) on a lime2.
The first issue is you need to upgrade the kernel to be able to go onto bullseye thanks to the yunohost migration.
apt update
apt full-upgrade
rm /etc/kernel/postrm.d/zz-flash-kernel
rm /etc/kernel/postinst.d/zz-flash-kernel
apt remove flash-kernel
apt-mark unhold armbian-firmware armbian-bsp-cli-lime2 linux-dtb-current-sunxi linux-image-current-sunxi linux-u-boot-lime2-current
apt install armbian-firmware armbian-bsp-cli-lime2 linux-dtb-current-sunxi linux-image-current-sunxi linux-u-boot-lime2-current
But, the problem is new kernel 5.10.60-sunxi seems to not support the ethernet (dhclient not working).
So i personnally, take the /boot and /lib/modules/5.8.16-sunxi from a previous image and put it manually in my sdcard.
And next i am able to run properly.
I finally did this command to avoid update-initramfs to break everything
apt-mark unhold armbian-firmware armbian-bsp-cli-lime2 linux-dtb-current-sunxi linux-image-current-sunxi linux-u-boot-lime2-current
There are probably better way to do.